Ra or Re, is the Sun god of Ancient Egypt. In the Fifth Dynasty period he became one of the main deities of the Egyptian religion, identified primarily with the midday sun. His main center of worship was the city of Heliopolis, where he was identified with the local sun god, Atum. Through Atum, or as Atum-Ra, he was also seen as the first being, responsible for the Egyptian Ennead, which consisted of Shu and Tephnis, Geb and Nut, Osiris, Seti, Isis and Nephthys.
In the pyramid texts, Ra and Horus are clearly distinguished (eg, Horus moves the throne of Ra to the south of heaven), but in later dynasties Ra was fused with the god Horus, forming Ra-Horachetti (Ra, who is the Horus of the Two Horizons), and was believed to be sovereign over all parts of the created world (heaven, earth, and underworld). It is associated with the falcon or hawk. In the New Kingdom the god Ammon became prominent, after merging with Ra and forming Ammon-Ra.
We are treating Ra and Horus as the same God here, as both have the head of a hawk and are represented as the Supreme God of the Sun. In the Egyptian Myth, it was Horus who defeated Seth to avenge the death of his father (Osiris), but lost an eye in battle, the so-called Eye of Horus.