Ramayana
न चान्यो राक्षसान्हन्ता सुरारीन्देवकण्टकान् । ऋते नारायणं देवं शङ्खचक्रगदाधरम् ॥ 7-8-25 ॥
And there is no other slayer of the Rakshasas, those enemies of the gods and thorns in the side of the celestials, save Narayana, the god who bears the conch, the discus, and the mace.
english translation