Ill get straight to the point.
1. Teleport behind target. Radiant, Paragon, Buffalo, what ever.
2. Emp their engines. Ion pulsar, Ion beam, 2x-3x.
3. Push them into your fleet and watch them get ripped apart.
4. Repeat.
Some things that might help.
Safety override: So escorts around the target shooting at you don't overload you.
Extended shields: So escorts cant shoot out your engines making the whole tactic fail.
Hardened shields: Makes both of the above better.
Timing: Teleport behind them just as they put shield up to engage their target, most often they will prioritize their frontal target than a frigate, allowing you to EMP their engines easily. But once their shield is fully extended, that might be much harder.
Pushing direction: Push towards your own large ships of course, but you can also push at an slight angle first to get them into a spin, then directly straight. The spin makes it so they cant fight back effectively. Just don't push them too much as they might overshoot your fleet.
Overall this is a great tactic to get rid of those radiant, double radiant fleets. As we all know they deal alot of damage with their insane weapon mounts and back out of the fight with easily with their system. Using this tactic you can have them removed from the battle easily.