Soterichos Panteugenos (Greek: Σωτήριχος Παντεύγενος) was a Byzantine cleric and theologian who was briefly Patriarch-elect of Antioch in 1156–57.
Originally a deacon of the Hagia Sophia,[1] Panteugenos was elected as Patriarch of Antioch in 1156, but was quickly embroiled in a raging Christological controversy, siding with the rhetoricians Michael of Thessalonica and Nikephoros Basilakes, who strongly distinguished between the persons of the Holy Trinity and argued that the Eucharist was offered to God the Father alone.
As a result, in Panteugenos' doctrine, humanity exchanged substance by physically incorporating the Son, and became a sort of partner to God the Father.
[9] Magdalino even suggests that Panteugenos, with his "powerful intellect", was the driving figure behind the theological controversies that destabilized the Orthodox Church in the period 1143–1157.
[11] After that, the most senior of the prelates present, including the patriarchs of Constantinople and Jerusalem, and the Archbishop of Bulgaria, demanded his dismissal, which was announced the next day.