[@thewizardguy] Well energy is matter, just not physical. The blade is not simply able to destroy everything, as I've said before. It is just versatile as it can destroy most physical matter due to its nature. Most charged particles(such as light, which is the primary component of this argument) are repelled by the V particles causing diffraction and polarization. 

I can accept that the shield may be magic, but in the description provided it is light, simply buffed with a 'holy' enchantment, which would have no bearing on the natural effect the particle would have on light.