Break through the barricade of troopers but beware the duo of Orions who descend the stairs just ahead. Lifeguard may be necessary for a while just to stabilise HP and kill off one of them before you can go for a full on attack. Right at the top on the right is an Axis Blade (weapon for Lightning which charges your ATB whenever you Attack) which can be used to speed up fights.

Proceed to the waypoint for more cutscenes.