There are some games which literally put you in a fight where you can't actually lose. For whatever reason. Be it that the opponent doesn't do any damage, or that you have an ally that will kill them with or without you, or if there's a cutscene once like one turn has passed, where one of your characters does something that kills the enemy.
Yeah, I've played a few of them
Probably the most obvious would be the final boss in FFX, though apparently you can lose if you're really unlucky
But I also hate games where they don't take difficulty curves into account
