The external conflict, man vs. supernatural, would be the type of conflict to describe this scene. Odysseus and his 12 men are trapped in the cyclopes' lair when he returns and uses a boulder to close the opening to the cave. The cyclopes proceeds to eat his men and doesn't release them. It is an external conflict because there is no internal conflict.
The external conflict, man vs. man is the what the scene portrays. Odysseus escapes with his men, but taunts the cyclops. His men argue with him to stop but he doesn't listen. Poseidon then proceeds to curse him never to return home to Ithca.
The internal conflict, man vs. self, can be seen taking place here. After Poseidon curses him to never return home he is filled with arrogance. He is set on going back to Ithica, no matter what.