Reducing Bloodboil damage

[Garbid]

Worth using Blessing of Sanctuary (http://www.wowhead.com/?spell=27168) on the whole raid for dmg reduction ? Also trying to use a Shadow Embrace (http://www.wowhead.com/?spell=32394) to minimise the bloodboil dmg. Assuming you got only 2 paladins.

Bloodboil does tick for 600 originally, but with Shadow Embrace (http://www.wowhead.com/?spell=32394) it's ticking for 540. Would Blessing of Sanctuary (http://www.wowhead.com/?spell=27168) reduce it further to 460 ?

[Worldie]

Blessing of Sanctuary if worth using if you got 4 paladins in the raid, else the standard blesses will do better.