Volkan by Suzanne Roslyn

Captured by a rogue dragon blood clan in the lava fields of Arabia, Nadira’s life is in danger unless she can seduce a ruthless dragon blooded soldier to help her with her cause.
Master Sargent Tarek Volkan’s mission was to take charge of a hostile clan of dragon shifters. Everything had been going great until a rebellious female became part of the bargain.
Rebel fighter, Nadira Marandici will never give up her cause to free the enslaved women in the dragon blood territory and give them rights. Captured by the Harrat dragon clan, she faces enslavement at the hands of the dragon clan’s new master.
Nadira isn’t fool enough to trust a dragon blood, no matter how much he sets her insides on fire, and Volkan isn’t about to let a woman get in his way to fulfill the duties of his mission.
One of them will have to stand down in this war between their hearts and the Harrats, but which one will concede first?