Shahnameh

History of Iran

Greek Invasion of Persia led to fall of Achaemenid Empire and Rise of Parthian Empire

Arab Invasion on Persia led to end of Sassanian Empire and Rise of Islamic rule in Iran

Safavid Empire was one of the greatest Iranian empires after the 7th-century Muslim conquest of Persia, which was ruled from 1501 to 1736 by the Safavid dynasty.
It is often considered the beginning of modern Iranian history, as well as one of the gunpowder empires.
The Safavid Shāh Ismā'īl I established the Twelver denomination of Shīʿa Islam as the official religion of the empire(Iran)

Nader Shah from Afsharid dynasty led invasion on India

According to Thomas Walker Arnold, for the Persian, he would meet Ahura Mazda and Ahriman under the names of Allah and Iblis

According to Bernard Lewis:
"Iran was indeed Islamized, but it was not Arabized. Persians remained Persians."