Our U.S. Navy used lasers to take down Scan Eagle UAV’s several years ago. 2016 IIRC. The same method could down a Reaper. It’s not unreasonable to figure the Israeli’s have taken things several steps further since then as they have been, and still are, the leaders in UAV technology.
It was actually 2015. There are several You Tube Boeing/Navy videos documenting the feat.