Disrupt Undead

(Player's Handbook v.3.5, page 223, DnD 3.5)

Necromancy

Level: ; Sorcerer/Wizard 0; Warmage 0; Duskblade 0; Wu Jen 0; Sha'ir 0; Death Master 0; , Glory 1
Components: V, S
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Effect: Ray
Duration: Instantaneous
Saving Throw: None
Spell Resistance: Yes

You direct a ray of positive energy.
You must make a ranged touch attack to hit, and if the ray hits an undead creature, it deals 1d6 points of damage to it.