Inaccurate?

Righteous Exile

(Fiendish Codex II: Tyrants of the Nine Hells)

Abjuration [Good]
Level: Cleric 9,
Components: V,
Casting Time: 1 full-round action
Range: 20 ft.
Area: 20-ft.-radius burst, centered on you
Duration: Instantaneous
Saving Throw: Will partial
Spell Resistance: Yes

With a word, your body gives off an explosion of divine energy, scorching the flesh of those creatures despised by good beings.
All evil creatures in the area take 20d6 points of damage.
In addition, evil outsiders that fail a Will saving throw (DC equal to spell's save DC – creature's HD + your caster level) are instantly transported back to their home planes.