The second ambusher shot at Porter before he had landed from his great leap, and before he could retrieve his lightsaber. He was in midair, without his primary form of protection, making the situation a bit complex to handle—but Jedi lost their weapons from time to time, and any Jedi Knight worth the title put in the hours developing strategies for unarmed defense.
Porter Engle reached out with both the Force and his hand, palm out, and deflected the bolt back, sending it caroming back off toward the hills. Not strictly necessary. He could have pushed it away with his mind, or frozen it in place. But flicking a blaster bolt away like an insect…it made a certain statement.

LoTJ Chapter 30