You should NOT turn your back on Satan, for this will mean you are running away instead of him running away from you!
You should face him and let him turn his back.
If you are facing his back, it means he is running.
But if you turn back from facing him, you are defeated.
Declare that you will NOT commit suicide.
If you do this, then you are facing him, and he will have to run away.
If you tremble for fear you will kill yourself, then you are the one who is running away.
If you are afraid of him, you are finished!