Achaemenid Royal Inscriptions: collection of Old Persian cuneiform texts from the sixth, fifth, and fourth centuries BCE, left by the Achaemenid kings on their official monuments.

XSe, inscription on a slab of marble from Susa

[Babylonian Inscription on a Column Base made of marble.]

I am Xerxes, the great king, king of kings, king of all countries, king of the world, son of king Darius, the Achaemenid.

The great king Xerxes says: Everything that I did over here, and what I did elsewhere on this world, I realized by my own hand; and everything that I did, I did with the protection of Ahuramazda.