[eternalban]

(Don't know why you are downvoted). Thank you for your reply. I think at the time when "great" was appended to Eskandar's name, so it became a norm, it was a held opinion, but tbh I don't have authoritative knowledge of this bit.

It is possible that Sassanid's had slipped into "idol worship" (promoting a couple of angels into some sort of Iranian pseudo-pantheon had already occurred) but note that there are no idols in Zoroastrianism itself. Fire is effectively a natural phenomena 'icon'.

[tboyd47]

I'm not an expert on Zoroastrianism but just relating something that's come in Muslim tradition.

"The idolaters wanted the Persians to prevail over the Romans, because they were idol worshipers, and the Muslims wanted the Romans to prevail over the Persians, because they were People of the Book."

http://m.qtafsir.com/Surah-Ar-Room/Foretelling-the-Victory-o...

We may just be splitting hairs, but I would be slacking if I had a reference and didn't provide it.