Don't Arab cultures have a hard-on for Hitler and Nazism?
If by "Arab" you mean middle easterners in general, and if Persian culture is representative of such in this way, then the answer would be mostly no. Hardcore ultra-nationalist foaming-at-the-mouth lunatics would indeed idolize Hitler and Nazism. But that's well under 3% or so of the general Persian population. These are the openly racist "proud to be aryan" idiots, and since that only applies to Persians I'd imagine there are even less Arab Hitler-worshipers than there are Persians.
So the bottom line is mostly no, we don't worship Hitler and Nazism. I mean, I'm even Persian Nationalist myself (much more so than most Iranian-Americans) and even I wouldn't go near as far to say I would actually respect Hitler.
Of course, a lot of this depends on how you define "Iranian Nationalist" to begin with. The ones that see nationalism in a racial/ethnic way are the ones which are very racist themselves with the "we are the pure, true Aryans, Iran is the land of the Aryans" nonsense.
There are also people (like me) that just want the best for Iran as a country and want to preserve its culture, which realize that culture and race/ethnic migrations are two entirely separate categories.
Pretty sure Ghandi showed remorse for his statements when he realized what a monster Hitler was.
Not that I agree with Hitler worshiping of any kind, but that probably had less to do with Hitler's antisemitism, and more to do with Hitler's antiBritish-ism (the enemies of your enemies...)