Final answer:
Minarets and Arabic iconography were not part of the imperial ritual in Justinian's Hagia Sophia, as they were added after the Ottoman conquest in 1453, well after Justinian's time.
Step-by-step explanation:
The question asks what was NOT a part of the imperial ritual in Justinian's church of Hagia Sophia. During the time of Justinian, there was a significant intermingling of religious and imperial imagery and rituals within the Hagia Sophia, highlighting the lack of separation between Church and state. The church also featured several mosaics of emperors and empresses, symbolizing their participation in church rituals alongside the clergy. However, the use of minarets and Arabic iconography was not part of the original design of the Hagia Sophia nor the imperial ritual during Justinian's time, as these features were added after the conquest of Constantinople by the Ottoman Turks in 1453.The imperial rituals that took place included the emperor's entrance through the Imperial Door, and the route was marked by mosaics of emperors. The mosaics depicted Justinian himself as well as past emperors, serving as a ceremonial route for the emperor to enter the church for the celebration of the Divine Liturgy. Minarets and Arabic writing were later additions and not part of the original imperial rituals.