This article appears in Chronos 41 (2020), 1-35. Mark III is otherwise known for his having visited Constantinople, where he submitted 40 canonical questions that were answered by the titular Patriarch of Antioch, Theodore Balsamon. Those questions and answers have been translated by Fr Patrick Viscuso and published under the title Guide for a Church under Islam (reviewed here).
Unpublished Texts from the Arab Orthodox Tradition (4): Canonical Responses of the Patriarch Mark III of Alexandria to the Abbot George of Damietta
Abstract:
The fourth installment in the "Unpublished Texts from the Arab Orthodox Tradition" series makes accessible a neglected document from the Orthodox Christian tradition in Arabic: canonical responses of the Chalcedonian Orthodox patriarch Mark III of Alexandria (r. ca. 1180-ca. 1209) to his spiritual son George, the abbot of the monastery of St. Jeremiah near Damietta. The article includes an edition and an English translation of this text.
Read and download the entire article here.