He is commemorated as a saint by the Syriac Orthodox Church in the Martyrology of Rabban Sliba, and his feast day is 13 or 16 August.
[6] Quriaqos aimed to put to an end to the phrase, 'we break the heavenly bread in the name of the Father and of the Son and of the Holy Ghost' in celebrating the Eucharist, which the Patriarch George had declared heretical as he argued it implied a division of the person of Christ, but its usage had not been banned in fear of a schism as it was popular at the monasteries of Gubo Baroyo and Qartmin.
[8] Bacchus was deposed after several warnings, but he defied the patriarch, encouraged the use of the aforementioned 'heavenly bread' phrase amongst clergymen in his diocese, and demanded that all future bishops of Cyrrhus have first been a monk at the Monastery of Gubo Baroyo, where he resided.
[9] The patriarch survived the incident unscathed as Harun's secretary Isma'il ibn Salih, who was acquainted with and on good terms with Quriaqos, was charged with handling the accusations, and exiled the monks.
[10] To reassert his authority on the church, Quriaqos summoned a synod at Beth Gabrin near Cyrrhus in 807/808, and excommunicated and deposed his opponents.
[8] Abraham consecrated his own bishops, accused Quriaqos of being a Julianist, and promoted the 'heavenly bread' phrase, to which the patriarch responded by excommunicating him and his supporters.
[2] In c. 816, in response to an invitation from Prince Ashot Msaker to debate the Chalcedonian Theodore Abu Qurrah, Quriaqos sent Nonnus of Nisibis to represent the non-Chalcedonians.
[1] Quriaqos issued forty-six canons at the synod of Beth Batin in 794/795,[2] one of which ordered clergymen and laymen to not enter the churches of the Nestorians, Chalcedonians, and Julianists, and to not participate in their services.