what was the abilty this Pally used?

[Vileplume]

looked on wowhead at the spells and couldn't find anything(unless the sceen shots aren't getting it's effect).. hte Pally kept using like a flash wave that moved to the right or left in a beam like wave looked really cool.. and my screen got really bright what is this spell?

[Cairhiin]

Light of Dawn?

[~Valen~]

Blinding Light? (Ah that is MoP)
Probably you're referring to Light of Dawn as others have mentioned!

[Slavemaker]

Dawn of Light maybe?

[Deleted]

Dawn of Light maybe?

You mean light of dawn :P

[Vileplume]

thanx that's it can't believe i missed that

[Malthanis]

Closing this, since the OP's question has been answered.