Ward from Poison

Until the spell ends, a 30ft area that you can see is protected against becoming poisoned.

The protection grants several benefits. Allies within the area can't be poisoned. If an ally is already poisoned the ally has advantage on any new saving throw against the relevant effect. While within this area, allies that are poisoned will find the duration halved.

If you cast this spell over 8 hours, you bless the land. The affected area is increased to a half-mile radius, and the effect now lasts for 1 year.

If you cast this spell, in the same spot every day for a year, this effect becomes permanent.