Chirrut is about to wuss out, tell Baze 'no, really, that would probably be a good plan, sorry, I should go hide in the sonics forever' when he hears that click, and scrambles to get his guard up.

'Cause Baze is built like a brick wall and not getting his guard up is going to lead to a painful introduction to the floor.

And getting pinned by Baze.

Oh Force.

Chirrut hangs on to his focus by sheer desperation as he parries the blows aimed at him.