I think the best defense is simply not to be in the same world as those who would harm you. Even if you choose to coexist in worlds where evil exists, you can arrange it such that you do not experience it yourself. Now that is not always one choice, even if you do choose it. But, one should understand that there are an infinite numbers of realities within one absolute reality. If you believe you cannot be harmed by such a weapon, you likely will not be because you will never be in the same place as the weapon. It is the ultimate defense of those who are said to have achieved "enlightenment". I have been in my car when part of another car has seemingly gone right thru part of my car. If your universe and the universe of another can be slightly out of sync --- well the possibilities are endless. One's life is a beautiful tapestry that once you get the hang of it you can weave your own most beautifully designed masterpiece...