so bad i already have 1 since years (2 actually as i deleted the 1st one)
Holy cleansing gives your group nothing else than 1650 fire/cold/electrical/holy protection, 3300 unholy protection, and 10% poison immunity. they do NOT recieve anything else from it.
Holy cleansing makes YOU do damages to targets near your group players and their minions. The holy damages are awarded to the pom only, for each friendly target affected by the spell.