>>64236174
I was thinking more along the lines of if you had a dazzler or lower powered laser built right into the cruise missile/drone, even if it's only enough stored energy for a quick burst.
Another thought might be if you could cover the missile in retroreflectors? if they're made with accurate enough tolerances and good enough reflective surfaces, they should directly bounce the laser back to the emitter minus whatever minimal amount of energy is absorbed by the mirrors.