I'll try to suggest some less obvious ones (as opposed to the obvious stuff like affliction-removing spells and Searing Light):
Hedging Weapons wouldn't be terrible if there are incorporeals about. It won't give as big a deflection bonus as Shield of Faith (at 12th level it's +1 less before you throw any of the weapons), but it's a Force effect and you can throw the weapons for ranged Force damage.
Blessing of Courage and Life isn't anywhere near as good as Death Ward, but it's still nice and it's a 2nd-Level spell instead of 4th. It also gives its bonus against fear effects and you can dismiss it as a swift action for an emergency 1d8+10 heal.
Boneshaker is good because you can make an undead use up its immediate action to force it to make a basic move or attack, and you choose the movement or target. Mindless undead won't even get a save. It's also a nice damage spell when used against non-undead.
Burst of Radiance blinds things regardless of alignment, and it damages Evil creatures. It's also a 10ft. radius burst, targets Reflex (which a lot of undead won't be good at making), and still at least dazzles as a consolation prize if they do make the save.
Hide From Undead has a Greater version that doesn't automatically end when you do things.
Sign of Wrath could be useful if you're being surrounded. It also deals Force damage and has a built-in effect to exclude creatures from the effect (1 per 4 caster levels, so 3 in your case). Sign of Wrath is also another of the few useful Cleric spells that target Reflex.