Constantine's daughter

The events of this story took place during the second half of the first century after the Hijra, and the rule at that time belonged to the Umayyads, and Damascus was the capital of the great Arab state, and the armies of conquest penetrated into the east, west, north and south, and the Arab region expanded every day for miles and leagues, and ancient empires collapsed, empire after empire, and the deified emperors They bow down to their chins in prostration; They are unable to defend themselves or those around them to defend or resist.
The army advancing in North Africa had conquered Egypt, Cyrenaica, and the neighboring countries of the Maghreb until it reached the shore of the Atlantic Ocean - which at that time was the end of the world to the west - and it began to look to the north, wanting to leap to Europe from the Strait of Gibraltar.
Other Arab armies in the East had cleansed the borders of the Levant from the remnants of the Romans, and nullified their resistance. Then they advanced on their way, penetrating the Anatolian Peninsula, and encamped under the walls of Byzantium - Constantinople - the capital of the Eastern Roman Empire, wanting to attack it and possess it, at a time when the armies were attacking. Morocco to the Iberian Peninsula, then the two armies proceed east and west, until they meet in the great land, the land of Rome, the capital of the Western Roman state.