Dantes Inferno X-box 360 Controller Cleopatra combo help?

I'm at the lust tower fighting cleopatra, the part right after you kill marc antony where it initiates the on combo. However I don't understand what the third symbol it is telling me to press. It just shows the left stick with a red semi circle around the top half of it. I've tried clicking the stick, moving it forward, side-to-side, and rotating it, but it won't work. What do i do?