https://www.d20srd.org/srd/spells/rage.htm

Level:Brd 2, Sor/Wiz 3
Components:V, S
Casting Time:1 standard action
Range:Medium (100 ft. + 10 ft./level)
Targets:One willing living creature per three levels, no two of which may be more than 30 ft. apart
Duration:Concentration + 1 round/level (D)
Saving Throw:None
Spell Resistance:Yes

Each affected creature gains a +2 morale bonus to Strength and Constitution, a +1 morale bonus on Will saves, and a -2 penalty to AC. The effect is otherwise identical with a barbarian’s rage except that the subjects aren’t fatigued at the end of the rage.