Generally any time when Eric and Sakidofight together, with the list including:
The two of them versus a gunship
Pretty much any battle that involves them fighting against the rebels completely outnumbered, though this may depend on opinion.
A less noticeable example is when the two of them fight against a pair of Angels.
Eric himself can sometimes be considered a walking CMOA due to being able to fight against both Angels AND Demons despite being a normal human. Of course, this is zigzagged considering where he's from.