It would help if you could post what exactly you’re having problems with i.e. How to get past Cable//Assist or Cable alone.
Since you play Mag/Cable/Sent, you can easily call your cable assist to knock out his assist for a few seconds, giving you some free rushdown time. Most likely Cable + the drones are giving you problems. Block the drones, dash forward, call your cable assist and sj at the same time. Sent goes flying, and Cable is open to an ass beating. Of course, you don’t want to try this over and over again, especially if the other Cable has meter. And of course this won’t work if you’re in blockstun. Usually you can do this if you bait him to sj and fire off a bullet. That gives you time to call cable and knock sent out for a while.
If you get him in the corner, go for a fk throw. That should equal to about ~60% damage on Cable [Fk throw, otg lk, fk, hypergrav, launch, SJ infinite setup, jumping lk + sentinel [if A assist type] fp, back into infinite.]
If you’re using sent drones, then you can change that last part into standing 1 hit fk + drones XX Hypergrav tempest.