Another favorite prayer of mine...

I didn't know this but this prayer can be recited after receiving holy communion.

The Amina Christi

Soul of Christ, sanctify me; 

Body of Christ, save me; 

Blood of Christ, inebriate me; 

Water from the side of Christ, wash me; 

Passion of Christ, strengthen me; 

O good Jesus, hear me; 

within Your wounds, hide me; 

let me never be separated from You; 

from the evil one, protect me; 

at the hour of my death, call me; 

and bid me come to You; 

that with Your saints, I may praise You forever and ever.

Here is a Wikipedia article giving some more background about the prayer.