Quriaqos had some success in confronting his opponents, in that Severus of Samosata was successfully dealt with after the patriarch appealed to the Muslim authorities. His success was short-lived as Quriaqos' deposition of Bishop Bacchus of Cyrrhus prompted an open schism. 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. Quriaqos disregarded Bacchus' demand, and ordained Solomon, a monk of the Monastery of Jacob of Cyrrhus, as bishop, but this incensed his opponents, and Quriaqos was removed from the diptychs of the diocese of Cyrrhus. The dispute escalated in 807 as monks from the Monastery of Gubo Baroyo met with the Caliph Harun al-Rashid, and accused Quriaqos of being an eastern Roman sympathiser and spy, and of constructing churches on the frontier with the eastern Roman Empire so to further aid them in the conflict against the caliphate. All churches on the frontier were thus destroyed on the caliph's orders, as well as churches at Antioch and Jerusalem. 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.