Alright, as I will show in the clip below, Shadow uses the same Soul Surge ability that Sonic has, the latter uses this entire energy as the foundation of his special abilities, such as the Chaos Punish. (btw this isn't magic, since Shadow is directly manipulating Chi here)
I also showed a direct gif of Sonic intercepting the attack by simply blocking, considering Excalibur's power null is not AP-based, it works on this same foundation, since it can directly intercept soul energy attacks from those kind of enemies when these powers are combined.