Iroas’s Disciple
Piety Trait
Piety 25+ Iroas trait
As a bonus action, you can call on Iroas’s blessing, gaining the following benefit for 1 minute or until you are incapacitated: creatures within 30 feet of you can’t gain advantage on attack rolls against you. Once you use this trait, you can’t do so again until you finish a long rest.
Source: Mythic Odysseys of Theros p. 49