[quote=@Sep]
<Snipped quote by Sir Lucario>

Laser cannons will work simply because theres too much energy for the individual blocks to dissipate it. Any [i]handheld[/i] energy weapons/blasters are useless unless they put out a lot of energy. Like shipboard weapons will bugger them up, like a handheld Phaser except at the highest OP setting won't do anything, but a shipboard phaser will destroy one
[/quote]

What defines an energy weapon? In canon, none of the Covenant's weapons are defined as outright energy, unlike the Forerunners, they all fire a form of plasma, in some cases an extremely fast stream of plasma, akin to a form of particle cannon.