Thank you to our friend Fr. Zuhlsdorf for this prayer. 
Check out his most excellent blog here.Prayer Against Persecutors and Evil-Doers:
Hostium nostrorum, quaesumus, Domine, elide superbiam: et eorum contumaciam dexterae tuae virtute prosterne. Per Dominum.
Crush, O Lord, we beseech Thee, the pride of our enemies: and prostrate their arrogance by the might of Thy right hand. Through our Lord.
Love and Blessings, Wendy C.
"Healing Mind, Body & Soul"
( PS...Please, come join me daily over at: https://www.facebook.com/MomOf13 I love interacting with everyone!)