This forum is to be used for all discussions pertaining to BioWare's Neverwinter Nights, its Shadows of Undrentide and Hordes of the Underdark expansion packs, and any user-created or premium modules.
Buy some potions of clarity. Open your inventory then drag a potion of clarity to your henchman's portrait and they will drink it. This will temporarily protect them from fear. If the potion wears off, just give them another one.
Once a character is inside the ring of dots which represents the fear aura, it is immune to the fear. However, if it goes out, a new saving throw is required.