Source: Player's Handbook
Deities: Acerak, Azhull, Brakah, Daer-Koch, Zhakrin.
Granted Power: You can perform a feat of strength, which is the supernatural ability to gain an enhancement bonus to Strength equal to your level. Activating the power is a free action, the power lasts 1 round, and it's usable once per day.
Strength Domain Spells
1 Endure Elements. Ignores 5 damage/round from one energy type.PHB 2 Bull's Strength. Subject gains 1d4+1 Str for 1 hr./level.PHB 3 Magic Vestment. Armor or shield gains +1 enhancement/three levels.PHB 4 Spell Immunity. Subject is immune to one spell/four levels.PHB 5 Righteous Might. Your size increases, and you gain +4 Str.PHB 6 Stoneskin. Stops blows, cuts, stabs, and slashes.PHB 7 Bigby's Grasping Hand. Hand provides cover, pushes, or grapples.PHB 8 Bigby's Clenched Fist. Large hand attacks your foes.PHB 9 Bigby's Crushing Hand. As Bigby's interposing hand, but stronger.PHB