Iranian religions primarily refer to the belief systems that have originated in or are practiced in Iran. The most prominent of these is Zoroastrianism, founded by the prophet Zoroaster around the 6th century BCE. This ancient faith emphasizes the duality of good and evil, worship of the supreme god Ahura Mazda, and the importance of individual choice in determining one's fate. In addition to Zoroastrianism, Islam is the dominant religion in modern Iran, introduced in the 7th century CE. The majority of Iranians are Shia Muslims, following the teachings of the Quran and the traditions of the Prophet Muhammad. Other religious minorities in Iran include Baha'is, Christians, and Jews, each contributing to the country's rich cultural tapestry.