Thats Guardian Sanctuary.
It actually doesn’t apply a boon, but it heals you and allies, blocks projectiles and prevents foes from entering.
80 second cooldown for 10 second duration boon = balance?
Thats Guardian Hallowed Ground…
It pulses 2 seconds of stability 10 times. That means if you stand in it for the full duration, you’ll have stability for a total of 20 seconds. The same counts for your allies who stand in it.