Hephthalite–Sasanian War of 484

The Hephthalite–Sasanian War of 484 was a military confrontation that took place in 484 between an invading force of the Sasanian Empire under the command of Peroz I and a smaller army of the Hephthalite Empire under the command of Khushnavaz. The battle was a catastrophic defeat for the Sasanian forces, who were completely swept out.

Source: Wikipedia — Hephthalite–Sasanian War of 484 (CC BY-SA 4.0)