SRD:Instant Counterspell (Divine Ability)

Instant Counterspell
Benefit: When any spell is cast within the deity’s line of sight, the deity can counterspell it as a free action, provided that the deity is capable of casting the spell immediately or has it as a spell-like ability and makes the required Spellcraft check. The use of Instant

Counterspell counts against the normal number of free actions the deity is allowed each round.

Suggested Portfolio Elements: Magic.