FeenixServerProject/Phoenix_1.12_Bugtracker — Issue #201: Priest Shadow Prot buff stacks with Paladin Aura 
Author: crotchrot
Created: 2011-10-31 02:41:09+00:00
State: open

Hello, in retail pre-tbc, and tbc/wotlk, these two buffs have NEVER stacked. Currently you can mitigate 30-40% of shadow dmg simply through these two buffs

Source:
http://www.wowwiki.com/Shadow_Resistance_Aura

This aura does not stack with the Priest Prayer of Shadow Protection or Shadow Protection buffs.