The article presents an Old Russian translation of the Epistle of Antiochian Patriarch Peter III to Archbishop of Grado on azymos. We offer the Old Russian text with Greek parallels. The Old Russian Text is supplied with apparatus based on 3 other manuscripts. The text is a translation of the second part of the polemic letter with some interpolations. The translation was made in the circle of the first Russian Metropolitans during the Pre-Mongol period.