The motif of Chaoskampf (German: [ˈkaːɔsˌkampf]; lit. struggle against chaos) is ubiquitous in myth and legend, depicting a battle of a culture hero deity with a chaos monster, often in the shape of a serpent or dragon. The same term has also been extended to parallel concepts in the Middle East and North Africa, such as the abstract conflict of ideas in the Egyptian duality of Maat and Isfet or the battle of Horus and Set.
The origins of the Chaoskampf myth is believed to lie in the Proto-Indo-European religion, the descendants of which almost all feature some variation of the story of a storm god fighting a sea serpent representing the clash between the forces of order and chaos.
Source: Chaos (cosmogony) – Wikipedia