Flash!
A streak of light in the sky illuminated the battlefield briefly. Everyone was blinded by the sheer brightness of the light in that split second, and when they regained their vision, they were greeted by a massive Mana Blade.
A glance was all they needed to tell that they wouldn't be able to block it in time. They were about to fall into despair and accepted their end, but the Priests and Eban saved them once again.
Boom!
The gigantic golden shield made its appearance. It completely blocked the Mana Blade that Goap sent, but one could see it didn't do as good as it had previously.
The time the Priests and Eban had to erect the shield had nothing to do with how well it fared against Goap's attack. It had simply met its match, which was strong enough to damage it.