I ended up doing this with a swarm of 50 meson armed fighters. They had been designed as escorts for my fast attack craft, and not for PD, but when I ran into some precursors i was forced to convert my entire fleet to PD, With the help of my fighters thinning the 3 24 missile salvos 60k ahead of my fleet, one of my two capital ships was able to weather their attack, and both my carriers survived. 7 out of 8 of my FAC and Destroyers were destroyed, but one survived it, leaving me with 1 active sensor that was undamaged. With my remaining capital ship blind, and my sensor ships destroyed, my max range on sensors were 160k km. I sent the last FAC with my fighters in what i hoped was the direction of the precursor fleet, a couple hours later the precursor ships lit up their active sensors, i'm guessing because they picked me up on thermal, acting as a lighthouse to my shortsighted attack force.
All in all it made for a pretty epic, and hairy battle.
edit: here are the fighters that did it:
Bahamas class Fighter 350 tons 48 Crew 59.5 BP TCS 7 TH 25.5 EM 0
7285 km/s Armour 1-4 Shields 0-0 Sensors 1/1/0/0 Damage Control Rating 0 PPV 3
Annual Failure Rate: 1% IFR: 0% Maint Capacity 53 MSP Max Repair 15 MSP Est Time: 18.49 Years
FTR Magneto-plasma Drive E880 (1) Power 51 Fuel Use 8800% Signature 25.5 Armour 0 Exp 35%
Fuel Capacity 50,000 Litres Range 2.9 billion km (4 days at full power)
R3/C3 Meson Cannon (1) Range 30,000km TS: 7285 km/s Power 3-3 RM 3 ROF 5 1 1 1 0 0 0 0 0 0 0
Fire Control S00.5 20-3000 (FTR) (1) Max Range: 40,000 km TS: 12000 km/s 75 50 25 0 0 0 0 0 0 0
Stellarator Fusion Reactor Technology PB-1 AR-0 (1) Total Power Output 3 Armour 0 Exp 5%
This design is classed as a military vessel for maintenance purposes
This design is classed as a fighter for production and combat purposes