I've found a YouTube video showing the spell animation of Power Word: Barrier and Archangel. Enjoy.
Power Word: Barrier
[Summons a holy barrier on the target location that absorbs [ 0.75% of Spell Power + 1650 ] damage done to friendly targets within it each time they take damage. While within the barrier, spellcasting will not be interrupted by damage. The barrier lasts for 25 sec or until it absorbs [ 5% of Spell Power + 11000 ] damage./]
65% of base mana, 40 yd range, 0.5 sec cast, 3 min cooldown
Archangel
Consumes your Evangelism effects, instantly restoring 3% of your total mana and increases your healing done by 3% for each stack.
Instant, 15 sec cooldown