Anustup mantra.

Narasimha Parvatapani Upanishad says that Perumal appeared before Brahma as Narasimha first and taught him the Narasimha Anushtup mantra with which he was able to develop the four vedas.

Ugram, veeram, Mahavishnum, Jalantham,
Sarvathomukam, Narasimham Beeshanam
Badram mrutyo mrutyum Namamyaham.

These are the nine forms of Narasimha ugra angry; Veera fighting; Mahavishnu lakshmiarasimha; Jwalantha figure emitting flames; Sarvathomukha Narasimha with a no of faces; Narasimha as Narasimhamavtara Ordinary;Bheeshana frightful;Bhandra terrible; Mrutyo mrutyu killer of death;

a prapatti sloka;

Aho veeryam aho sowryam aho bahu parakramaha
Narasimham param deivam Ahobalam Ahobalam.