Ahura Mazda (also known as Ahuramazda, Harzoo, Hormazd, Hourmazd, Hurmuz, Ohrmazd, 'Lord' or 'Spirit') is the highest spirit worshipped in Zoroastrianism, the old Mede and ancient Persian mythology which spread across Asia predating Christianity. Ahura Mazda is the creator of the universe and all the things in it, being at the same time wise and good.
More about: Ahura MazdaDefinition
Timeline
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628 BCE - 551 BCELife of Zoroaster, according to Pahlavi sources.
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224 CEZoroastrianism becomes Persian state religion under the Sassanian Empire.