Manichaeism, an ancient dualistic religion that rivalled Christianity which spanned from Iberia to China, and died out around the 14th century, it combined elements of Zoroastrianism, Christianity, Buddhism and Gnosticism. A Manichaen idea was that cucumbers contained sunlight hence were good for your health. Saint Augustine of Hippo was a follower for about a decade before he converted to Christianity. He carried over a lot of the concepts and beliefs with him, his writings became a large part of the foundation of the Catholic and Orthodox Church, and much of protestantism was about bringing back the focus of the church to Augustinian theology from Thomas Aquinas. As a result modern Christianity has a lot of the DNA of Manichaenism in it still, especially reformed/Calvinism with its belief in double predestination of the elect goes back to Manichaenism's belief that the elect are predetermined at birth. Augustine would often describe Christianity in opposition to the Manichaen. Most likely due to its similarities to other Christian heresies. In confessions he dunks on them pretty hard saying stuff like “all these scientists can predict things but don’t really know what they’re predicting, but at least that’s better than the Manichaens because they just are spouting off nonsense” It’s also circular with the influence because Mani himself probably came from a Christian community too and he styled himself after Paul of Tarsus. Also Augustine’s view on evil as just a negation of good instead of being a stand alone force is very different from manichaean dualism. And the last remnants are a couple of isolated villages in southern China, where Mani is worshipped as a local ancestral deity.