Death Comes Riding — Terrell L. Bowers

When a simple job turns out to be a death ride for Lucas, he's rescued by Daniel Books, a half-Cheyenne, and Lucas's life is changed forever... In the midst of an impending Indian war, Daniel helps Lucas to find the men who'd robbed and shot him, leaving him for dead. Meanwhile, Iris Ducane has captured Lucas's heart, but Captain Bagot, from the nearby fort, would kill Lucas to win her hand!