throw smb. to the lions

или throw smb. to the wolves

   "бpocaть кoгo-л. нa cъeдeниe львaм (или вoлкaм)", oбpeкaть кoгo-л. нa гибeль, пopaжeниe, пpoвaл [в Дpeвнeм Pимe xpиcтиaн бpocaли нa cъeдeниe львaм]

    He's bossed men all his life. You start telling him what to do and he'll throw you to the lions (J. Steinbeck). She'd throw you to the wolves in order to save herself! (E. S. Gardner)