Srimad Bhagavatam Canto 06, Chapter 08, Text 11

SB 6.8.11

atmanam paramam dhyayed
 dhyeyam sat-saktibhir yutam
vidya-tejas-tapo-murtim
 imam mantram udaharet
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
After finishing this chanting, one should think himself qualitatively one with the Supreme Personality of Godhead, who is full in six opulences and is worthy to be meditated upon. Then one should chant the following protective prayer to Lord Narayana, the Narayana-kavaca.
Srimad Bhagavatam Canto 06, Chapter 08, Text 08-10
Srimad Bhagavatam Canto 06, Chapter 08, Text 12