Shapur I's inscription at the Ka'ba-ye Zartosht

Shapur I's Ka'ba-ye Zartosht inscription, also referred to as The Great Inscription of Shapur I, and Res Gestae Divi Saporis, is a trilingual inscription made during the reign of the Sasanian king Shapur I after his victories over the Romans. The inscription is carved on the Ka'ba-ye Zartosht, a stone quadrangular and stepped structure located in Naqsh-e Rustam, an ancient necropolis located northwest of Persepolis, in today's Fars Province, Iran. The inscription dates to c. 262. ()