You point is right on the money - it is Christ, the Alpha and Omega - the beginning and the end — which is why I have no issues standing against Islam - and take care to share stories of hope, especially when angels are involved. If you try, you will not find stories like this among Moslems - I’ve shared such stories - they either laugh or tell stories of genies (demons) wrecking havoc in their lives...another tell-tale sign that they are following a curses religion...
The way to fight any spiritual darkness is with the sunshine. Sometimes God may bring it home to us that the only way to deal with a particular darkness situation is to deny its proponents resources... but that’s not a first choice. The first choice is to try to bless.