Russian Slavs traditionally practiced a form of polytheistic religion known as Slavic paganism. This religion involved the worship of various deities associated with nature, such as Perun (the god of thunder), Veles (the god of earth and fertility), and Triglav (a three-headed god). They also believed in spirits and ancestors, and performed rituals and sacrifices to gain their favor. However, with the Christianization of the region starting from the 10th century, many Russian Slavs converted to Orthodox Christianity, which subsequently became the dominant religion in Russia.
