Aura of Life

Level & School
4th-level abjuration
Casting Time
Action
Range
Self
Components
V
Duration
Concentration, up to 10 minutes
Classes
Cleric, Paladin

An aura radiates from you in a 30-foot Emanation for the duration. While in the aura, you and your allies have Resistance to Necrotic damage, and your Hit Point maximums can't be reduced. If an ally with 0 Hit Points starts its turn in the aura, that ally regains 1 Hit Point.

Level & School
4th-level abjuration
Casting Time
Action
Range
Self (30-foot radius)
Components
V
Duration
Concentration, up to 10 minutes
Classes
Cleric, Paladin

Life-preserving energy radiates from you in an aura with a 30-foot radius. Until the spell ends, the aura moves with you, centered on you. Each non-hostile creature in the aura (including you) has resistance to necrotic damage, and its hit point maximum can’t be reduced. In addition, a non-hostile, living creature regains 1 hit point when it starts its turn in the aura with 0 hit points.

Aura of Life 5.5e 2024 vs. 5e 2014 edition differences

The 2024 version specifies an emanation with a fixed 30-foot radius, while the 2014 version states a 30-foot radius that moves with the caster. The 2024 version clarifies the aura is an emanation, and explicitly states "while in the aura" for resistance and healing effects, whereas the 2014 version states "in the aura."