Here Helios rides a quadriga (four horse chariot) while he attacks the giants. Gaia (mother of giants) emerges from the earth in the left corner below, and the river god of Perge Cestros is seen drowning a giant with water poured from an amphora.
Source: Antalya sculptures of the Perge theatre gallery.
Helios was the personification of the sun. Gaia personified the earth.