[The source page includes a PDF of the original Greek text.]
(MY NOTE: The translation is unclear in many places and thus it is best to consult the original Greek text in such cases.)
The Holy Community (central administrative body of Mount Athos) held an emergency meeting on May 25th, described as “exceptional” because it was attended by priests and representatives of all 20 monasteries of Mount Athos, and wrote an open letter to the Patriarch of Constantinople Bartholomew I weeks ahead of the Pan-Orthodox Council. The letter contains a series of critical remarks concerning the provisions of the pre-synodical conciliar documents, as well as some of the [non-canonical] actions of Patriarch Bartholomew.
Katehon published an exclusive translation of the letter and calls of the Orthodox Christians to discuss it:
Ref.no.: F.2/7/1085 Karyae, 12th/25th May 2016 His Most Reverend All-Holiness The Ecumenical Patriarch Bartholomeos The Phanar
Most Holy Father and Master,
With a deep filial veneration of Christ's Resurrection, we are glad to pay your Divine Holiness words “Christ is Risen.”
According to the precepts of our holy places, we agreed on purely extraordinary meeting of representatives and superiors, piously taking into account: a) Your honor Patriarchal letter of the 11th March 2016, which notified our Holy Synod about the upcoming convocation of the Holy and Great Council and annexed for reference six prepared documents of the Holy and Great Council.
b) Your Patriarchal and Synodal Encyclical Letter dated this year, March 20th, which offered first and foremost the purposes of the Pan-Orthodox Council “to show that the Orthodox Church is the One, Holy, Catholic and Apostolic Church, finds unity in the sacraments, above all in the Eucharist and Orthodox faith, as well as in catholicity,” and declared that “the agreed upon common Orthodox level and submitted for the Holy and Great Council documents are published and made available to all benevolent-minded believers for their awareness and notifications, including that they can express their opinions and expectations over the Holy and Great Council.”
Responding to the paternal urge of your Divine All Holiness, we diligently pray with everyone and the Holy Mountain fathers to the One True God, our Risen Lord Jesus Christ, to bless and point to the right direction for an important work of the Holy and Great Council for the benefit of His Church, and in fact reveal the unity of our Holy Orthodox Church as all the same Holy, Catholic and Apostolic Church.
Having studied with attention and diligence submitted for Council texts, we intend to provide the following considerations.
We respect and properly honor the Great Mother Church of Christ, and you - the Ecumenical Patriarch and our Father. We continually pray for the martyrs of the Ancient Church and support the Ecumenical Patriarchate in its continued bearing of a heavy cross. Any same time, when there are issues burdening [conciliar] consciousness of the Holy Orthodox Church, we, with filial reverence and love, as did its predecessors our fathers, reverently express their opinions and suggestions.
We note strenuous and commendable efforts of the representatives of the Holy Orthodox Church as part of preparatory meetings for the Pan-Orthodox Council, aimed at the production of the draft texts submitted to the Council, which were published by the decision of Venerable Primates (January 21st-28th, 2016).
However, we believe that some paragraphs of the text submitted to the Council need to be clarified as they clearly manifested enduring tradition of the Holy Fathers of the Church and the catholic heritage. We humbly present their views and make suggestions on the trial and evaluation of the Church on these issue.
The first one refers to ecclesiology. The statement: “The Orthodox Church, being the One, Holy, Catholic and Apostolic Church” is rightly taken out as a title at the beginning of the document with the title The Orthodox Church's Relations with The Rest of the Christian World as a sign of its exclusivity. At the same time, the Holy and Great Council, as a higher authority than the preceded meetings, should be complemented by the wording of the relevant text and avoid the use of the definition of the “Church” with regard to the non-Orthodox, and instead use the term “Christian doctrines and faiths.” Thus, the non-Orthodox will clearly understand that we, the Orthodox, think of them as their sincere interlocutors. In this respect, it would be more accurate to enter in the second paragraph of the sixth paragraph of the text the words “Orthodox Church states (instead of “recognize”)  existence of other Christian confessions...”
Further, the concept of unity of the Church also needs to be clarified. We believe that this unity includes only members of the Orthodox Church, to form the body of Christ, implicated “glory” (worshipful grace of the Holy Spirit), which the Great Pontiff prayed our Lord Jesus Christ. Only they say “they may be one as we are one”, on the interpretation of God-bearing Fathers (Athanasius, St. John the Evangelist and St. Cyril of Alexandria). This will be all for the good and benefit as the self-consciousness of the Orthodox congregation and non-Orthodox, if we talk about the return of the One Holy Catholic and Apostolic Church, or, in our opinion, the Holy Orthodox Church, which firmly holds “the indissoluble link between the right faith and communion in the sacraments,” as it was expressed by the holy Ecumenical Councils.
Considering this sense of the unity, the Church “is always to develop a dialogue with those detached from it, near and far” and it is within this framework can be expressed in its apostolic nature “under new historical conditions”  with the explicit aim of facilitating their return to its sacred and spiritual unity. More specifically, we propose that the last sentence of Article 5 on the “lost unity of Christians” would sound in the formulation of a “return to the truth of fallen away from it (the Church) Christians.”
The second one that should be amended to reflect the abiding consciousness of the Church is the fact that reports on bilateral and multilateral inter-Christian dialogues. The way and the very course of theological discussions do not inspire calm for the whole fullness of the Church, and our sacred Synod at different times due to different circumstances expressed its opinion in the official documents against the theological agreements with non-Orthodox, protesting against joint prayers and other liturgical actions (in particular, kissing at the liturgy), thereby creating a false impression of unity with them, as referred to in the document of our meeting priors (ΕΔΙΣ) on 9/22 April 1980. More specifically, Article 18 of the document “On the Orthodox Church's Relations with the Rest Christian world”, after the words “the Orthodox Church cannot accept the unity of the Church as a kind of inter-creeds compromise” shall be added “or as participation in joint prayers and other liturgical actions”, which causes confusion in the consciousness of the fullness of the Orthodox Church. In addition, we cannot but express our concern about sharp and fair objections to the continued participation of the Orthodoxy in the “World Council of Churches” (WCC).
The third one is about the “Rules of organization and operation of the Orthodox Church and the Holy and Great Council”. We understand all the complexity, and therefore are not commonly concerned, which makes us a way of organizing and equal participation of bishops. However, Article 22 of “The relationship of the Orthodox Church with The Rest Christian World”, which refers to “the highest church criterion in matters of faith”, could be clearer if it was further explained that the church tradition recognizes as the supreme criterion of faith [conciliar] consciousness the fullness of the Church, which in some cases is expressed by individuals or assemblies of bishops or believers, and which is then approved by the conciliar decisions.”
**We also believe that the decision of the Holy and Great Council should include references to the Great Council of the Orthodox Church that followed the Holy Seventh Ecumenical Council (when Photios the Great (879), when St. Gregory Palamas (1341-1351) and those that proclaimed null and void the Lyons and Florence fake-Councils of Unions), in respect of these councils noted dogmatic and ecclesiological differences with non-Orthodox (filioque, creaturely grace, papal primacy, etc.) so that they were completely clarified.***
The fourth one is the last of the selected points associated with the spirit of the document The mission of the Orthodox Church in the Modern World. This text is different through spiritual subtlety, even though we, the Holy Mountain, being the heirs of the ascetic tradition of holy silence, we believe that it could be very successfully completed (preferably in paragraph 6 or 13) a detailed presentation of the Orthodox anthropology and cosmology in its form, in which it was formulated by St. Gregory Palamas. More specifically, this could be amplified with:
"God may open up to man and to join with him in direct communication, when the latter strive for masteries for Christ, constantly recovering him with mental prayer. The aim of this strict and sacred spirituality is a deification, a personal experience and praying the Divine Light of the Transfiguration. An indispensable condition for this is the fact that this personal perfection, expressed in communion with God and His revelation, occurred only in the Church. All this selfless abuse occurs only with the grace of God, and in any case, it is not separated from it (especially not with the use of different techniques, found in some ancient and modern occult movement or by the autonomous development of the human mind and knowledge).
Within this framework, the central place is occupied by the argument of the essence and uncreated energies of God. God is not inaccessible to a man, but enters into a direct relationship and a personal relationship with him through his uncreated energies. Thus, man becomes involved in the divine life and becomes a God by grace. God's energy are not some undefined force or a superpower, but are alive threefold in the people of God, which is available to the person who can receive His communion. It is part of its history and life, so that he “became a communicant of the divine nature”, carrying “in image” and striving to for the “likeness” by deed, acquiring the virtues and overcoming the passions.”
The world for Christ comes through a worshipful way to a man's heart, “highest world", which should be opposite to the concept of inner mundane world, achieved through interfaith initiatives and activities.
Most Holy Father and Master,
We are sincerely appreciative of the efforts of those who work for the preparation of the Pan-Orthodox Council, but we must say, in conclusion, that the documents prepared for submission to the Council require improvements that are needed in order to properly express the conciliar consciousness of our Holy Orthodox Church. We request, among others, to be taken into account and set forth herein proposals developed by us deliberately, carefully, and prayerfully so that the Holy and Great Council will become "a true expression of the canonical tradition and continuation of the Church's work through the carrying out of the synodical system”  of Church. Then there will be great joy in heaven and on earth an all possible quarrels and splits will be overcome, and all the fullness of the Church “with one mouth and one heart” will glorify the Most Holy Trinity, God, as hope for the world's salvation.
We end our letter by offering fervent prayers to the Risen Lord for Your Holiness and for a favorable outcome to the scheduled convening of the Holy and Great Council, remaining in the deepest respect and filial devotion,