Fortunately for Starscream, Megatron pays him no further mind; Arcee has his full attention once she's the only one talking and the only one firing.

The blaster fire slows him down a little as he moves to meet her halfway, but it doesn't stop him from smacking her aside with the back of one hand with enough force that she sprawls on the ground a few yards away; before she can pick herself up, and before Orion can limp over to intervene, he's looming over the smaller bot, hauling her up by the arm in one huge, clawed hand.

"Optimus Prime," he replies, letting her dangle in front of him for a few moments, "would put up a better fight than this." Then he throws her against the side of the nearest building (good thing that was probably evacuated by now) with equal measures of wrath and disdain.