Agree, I suspect that an LED flashlight would survive an EMP event.
But just to make sure during a HEMP E1 nanosecond pulse, these might help
http://techprotectbag.com/ to protect those valuable electronics such as SW radios/Funcubes/GPS/notebooks/cameras/watches etc including LED flashlights/Bulbs
then place in a good quality sealed
Aluminium Breif Case Aluminium Brief Case.