You can research the Yazidis. They’re an odd combination of religious traditions, with Zorozastrianism probably the most important component.
One name of their preeminent demigod is Shaytan, which obviously doesn’t go over well with Muslim or Christian neighbors.
They are linguistically (some words they use such as Yazad or eezad) and a tiny bit ‘culturally’ close to old persian beliefs, which includes zoroastrianism.
However, their religious practices & theologically they are definitely closer to islam. And more a mixture of abrahamic religions plus pagan elements than zoroastrianism.
BTW, to be clear on my previous post here, the word you mention ie Shaytan is Arabic (islamic) from which the related word we use in english is satan.
In old & middle persian the concept of (negative/dark force/evil) & related word ‘satan’ is known as Ahriman or Angra Maynu (literally meaning ‘angry sphere/half or spirit’). Both ahriman & shaytan words are still very much in use in modern persian. But shaytan much more & commonly used by muslims.
Moreover, there is no concept of shaytan or ‘the peacock’ redeeming himself/itself hence worthy of worship, in zoroastrianism. I can only surmise it’s a pagan influence of sorts for Yazidis.