Mantra

Ugram , Veeram, Mahavishum, Jwalantham,
Sarvathomukam, Nrisimham Beeshanam
Badram, Mrutyo mrutyum namamyaham

This is the maha mantra

It mentions the nine forms:

1. Ugra (angry), 
2. Veera (fighting),  
3. Mahavishnu (Lakshmi narasimha),
4. Jwalantha (emitting flames), 
5. Sarvathomukha (many faces),  
6. Narasimha,(Man Lion)
7. Beeshana (frightful), 
8. Bhadra (terrible), 
9. Mryuto mrutyu  (killer of death)