Byzantine Empire

The Roman Empire has been divided into an Eastern Empire as its capital, Byzantium and Western Empire as its capital, Rome.
And the Byzantine Empire had reached a state of great vulnerability in the seventh century that encouraged the Persian Empire in the Middle of the attack and occupation of the Levant and Egypt,

, Then Persian entered Alexandria and looted the city and killed many
Persian rule lasted for only a few years where the emperor was able to recover the empire of Hercules and I came back from Alexandria a new Byzantine Roman empire.
Hercules and wanted to power in the appointment of the Patriarch of Alexandria gives it a political side of the Chair of the religious authority can be appointed to the oppression of Coptic Patriarch of Romania, named  "Almqoks"

 Islam in the Arabian Peninsula is still in its infancy when these events occurred