The jab from his opponent did leave a small hole on his armor, but it was sturdy enough so that it didnt get to him.
Wave remembers how his old general had told him about this teigu, and deicides to wait out the clones, by simply dodging them. As he does this, the clones begin to lose steam and eventually become really easy to kill. When he heads to last clone, he willingly let the flames touch his armored arm and uses the ensuing smoke to quickly charge at Haru, and punches him - not enough to kill, but enough to stun the little imbecile for a while - and then heads towards the dude with the mask, who had clearly made Kisame a madman. Somehow, it was upto him to save Deidara and Kisame from killing each other. So, he again starts flying, and right at the moment when the Incursio user's attention was elsewhere, he performs a Grand Fall on him, and then performs one of the most complicated sword maneuvers : He sidesteps as soon as he lands, thus not allowing Lelouch enough time to counter or even assess the situation, without looking naywhere near his face, and then bends down and swipes hard at his knees with his sword and then punching him out cold as he falls down.
He then steps back, and waits for Kisame to return to his control, and awaiting a charge by Bulat, and jumps back up as Deidara's bombs hit ground close to him, maybe injuring Kisame.