Prot Pally Shadow LRE
Works like Tactical Mastery's stagger but has a Shadow damage conversion...I'll explain.
If you get hit for 1000 physical dmg you will take 600 instantly and 400dmg over 10 seconds as Shadow dmg. But if your Shadow resist is maxed out (70%) then the 40dmg per tic becomes 12dmg per tic. This LRE automatically gives you a good chunk of Shadow resistance from Defense rating so the more the merrier.
This LRE also boosts your Consecration damage based on how much damage you're taking (storing). The more damage you take, the more damage you can deal. Hypothetically, let's say your Consecration normally tics for 200dmg. If your Shadow Pact is hitting you for 40 dmg per tic (before your shadow resistance) then Consecration will hit for an extra 40dmg per tic. If you're getting bent over hard in raid you could get your Consecration to hit like a truck. (if the healers can keep you alive)