The only way to fight a religious motivation is to counter that motivation. The proven way is to destroy the value of the sacrifice by making what remains of the body unclean to Allah. This can be done by burying the remains in pig skin.
Of course many PC-oriented people would rather die than appear to “discriminate” or “offend” any non-Christian religion. From the looks of this news story, that is exactly what may have to happen— the PC Police may have to die before we are willing to directly counter the jihadist’s sacrifice of himself.