Persistent effects (Such as Moonbeam, Hunger of Hadar, Spike Growth etc) don't count as coming from your character and thus will not trigger any equipped items.
The logic is something like, you're creating the effect, and then the effect does the damage not you.
Spirit guardians is working
Aye.
I suppose I should have been more precise, "Ground based persistent effects"
Persistent effects that are still attached to your character (Such as Spirit Guardians, Warding Bond etc) still count as coming from your character.
