Ahriman battles the forces of right, light and justice.
Ahura-Mazda
Mithras slays the bull.
An artist rendering of the prophet Zoroaster.
Below is another (attempted) link to an explanatory essay regarding Zoroastrianism and other faiths:
Zoroastrianism and other faiths
Ahura Mazda had help from other deities (in addition to the people as "Collective Savior" and the Messiah/Saoshyant at the end of the age) in his battle against the forces of evil/chaos/Ahriman. One was Mithra, whose worship will eventually spread to India, Palestine, Asia Minor, and ultimately the Roman Empire. Mithra is usually portrayed as slaying a bull, thus bringing salvation, order, and security to his followers.
