"Let the Eye of Horus come forth from the god and shine outside his mouth." The Pyramid Texts
Horus, represented as the falcon-headed god, was an important god in Egyptian legend. The symbol representing his eye, Eye of Horus, was a powerful symbol used to protect from evil. Pronounced "udjat" by the Egyptians, the Eye of Horus represents a human eye with the cheek markings of a falcon.

Horus "who rules with two eyes"