Seraptis Demon and Compelling domination.

[DarkstarDSE]

Does the target of dominate person receive an initial save?

Compelling Domination (Su)
When a seraptis uses dominate person, its victims do not actively resist and never gain a new saving throw when ordered to take actions against their nature

[LadyGrayRose]

The wording is somewhat vague but since the statblock lists a DC, I believe the intention is that they receive their initial save versus Dominate Person.

[Xenocrat]

They definitely receive their initial save. They only don't receive subsequent saves for the specified reason. If they get a subsequent save for a different reason (spell, class ability, etc.) they still would roll again.