Missiles, Neuts, ECM and Disruptor.
In wormholes, even the point defence battery (but I don’t have experience with that myself).
On the question of ECM, Standup works the same as normal. The jammed person can still target the citadel, but any assistance to that person can be stopped and any assistance they were providing to others can be stopped.
Jam people assisting your main target
Disrupt the target
Concentrate all DPS on the target - missiles and fighters
If logi is on field, use ecm and neut against the logi
If no logi then neut the target
So the application of the neut needs to be based on what you face, but the others are pretty stright forward.
If it is a remote rep based fleet, anything you can do to break their fleet up will help you kill the primary. In a wormhole that may be a challenge.