I'm not saying this to be trite, but use Christ as your shield.
Study the Gospels. Read the Sermon on the Mount. Read the proverbs.
here is a mantra that will also help, which may force those around you to approach you from a more holy state of mind:
"presence of God in all things."
keep it all honest.
do not agree to 'ironic truths' that are 'funny' (ie don't say degenerate things, or make jokes as if you are a bad person).
you must realize that they are more broken than you if they are trying to use you as a patsy.
if they are trying to use you as a patsy you need to extricate yourself from the situation. Walk away.
Do not dox yourself here!