Divine Countermagic

 
Prerequisite(s): Ability to Turn/Rebuke Undead, Access to the Magic or Spell domain.
 
Benefit: You can counter someone else's spell by expending a turn or rebuke attempt, rather than casting a spell. You must spend one turn/rebuke attempt, plus one additional turn/rebuke attempt per level of the spell being countered. In all other respects, including using a readied action and identifying the spell with a spellcraft check, this ability functions the same as a standard counterspell attempt.
 
Source: Faiths of Eberron