When the droid opens fire on the librarian Ren-Do ineffectually tries to block the blast with his lightsaber, before realizing that without a stronger connection to the Force he would be unable to save the man. Instead, he places himself directly between the man and the dangerous droid, as if daring the beast to shoot him rather than the librarian.
He takes a few half-hearted swings at the droid, but his priority seems to be keeping the man safe. When the droid fires again Ren-Do instinctively tries to block the blasts. He manages to interpose his blade, but the force of the blast knocks the weapon on the ground. As the hilt clatters on the floor the blade is turned off. The Cerean has a surprised look on his face, but instead of diving for his weapon he keeps his position in front of the librarian, keeping the droid's attention focused on himself.