Vance tells Pope Leo to "be careful"

     Deliver me, O LORD, from evil men; preserve me from violent men, 
     From those who devise evil in their hearts, and stir up wars every day.
     Save me, O LORD, from the hands of the wicked; preserve me from violent men Who plan to trip up my feet. The proud who have hidden a trap for me; They have spread cords for a net. By the wayside they have laid snares for me
     Grant not, O LORD, the desires of the wicked; further not their plans.  Those who surround me lift up their heads; may the mischief which they threaten overwhelm them.
     I know that the LORD renders justice to the afflicted, judgment to the poor. Surely the just shall give thanks to your name; the upright shall dwell in your presence.

Context:

" Then Stalin turned to Churchill and asked that famous question after taking a tug at his moustache: "How many divisions did you say Pope has?"