Your post is long back and I think you might have got the sloka Sri Nrusimha Prapathi. Still I am providing the details for the benefit of those who may want to know.
Narasimha Prapatti
MATA NARASIMHA, PITA NARASIMHA
BRATHA NARASIMHA, SAKHA NARASIMHA
VIDYAA NARASIMHA, DRAVINAM NARASIMHA
SWAMI NARASIMHA, SAKALAM NARASIMHA
ITHO NARASIMHA, PARATHO NARASIMHA
YATHO YATHO YAHIHI, TATHO NARASIMHA
NARASIMHA DEVAATH PARO NA KASCHIT
TASMAAN NARASIMHA SHARANAM PRAPADYE
Translation
Mother is Narasimha; Father is Narasimha
Brother is Narasimha; Friend is Narasimha
Knowledge is Narasimha; Wealth is Narasimha
My Lord is Narasimha; Everything is Narasimha.
NRUSIMHA is in this world, NRUSIMHA is everywhere (Omnipresent)
Wherever I go, there is NRUSIMHA
NRUSIMHA is the Supreme Lord, there is none other than HIM
So, I humbly seek refuge in you, Shri NRUSIMHA
Significance of NRUSIMHA Prapatti
A simple sloka that acts as a ‘great protective shield’ at all times