O.C.G.A. § 51-5-8: Absolute privilege of allegations in pleadings.

All charges, allegations, and averments contained in regular pleadings filed in a court of competent jurisdiction, which are pertinent and material to the relief sought, whether legally sufficient to obtain it or not, are privileged. However false and malicious such charges, allegations, and averments may be, they shall not be deemed libelous.