Reading up on 5th Edition spells I came across the 5th Level Evocation Hallow:
You touch a point and infuse an area around it with holy (or unholy) power...The affected area is subject to the following effects.
First, celestials, elementals, fey, fiends, and undead can't enter the area [unless explicitly excluded from this effect]...
This got me curious as to how this would interact with the spell Spirit Guardians:
Spirits float around you up to 15 feet away. If you are good or neutral, they appear angelic or fey. If you are evil, they appear fiendish...
Would the fey or fiendish Spirit Guardians be prevented from entering a Hallowed area that excludes them, effectively neutering the Guardians spell within Hallow's radius? I couldn't find any discussion or rulings about this online.