Canto 3 -
Araṇya-kāṇḍa
Chapter 20: Rāma Kills the Fourteen Rākṣasas
When Rāma noticed the rākṣasas who had arrived with Śūrpaṇakhā, He instructed Lakṣmaṇa to protect Sītā-devī and departed to fight with the rākṣasas. When Śrī Rāma singlehandedly faced the rākṣasas, He identified Himself and then threatened them with harsh words. When the rākṣasas stayed on, prepared to fight, He killed them. Śūrpaṇakhā then went back to Khara and informed him about the destruction of the fourteen rākṣasas.