In a suit where the doctrine of res judicata applies

Under Section 11 of the Code of Civil Procedure, 1908, no court shall try a suit or issue that was directly and substantially in issue in a former suit between the same parties, litigating under the same title, and heard and finally decided by a competent court. A suit barred by res judicata is therefore liable to be dismissed, so the answer is "The suit is liable to be dismissed"; staying a suit is the consequence of res sub judice under section 10.