[PvK]

Is this a modded game? If so, which mod?

Seems atypical for someone to have high-tech drones when you have no PD.

What size weapon platforms do you have? Large-mount long-range weapons might bag at least a few on their way in.

Mines block drones in most mods.

Drones move predictably on the strategic map. You might be able to intercept them there before they reach your planet, and take care of them with ships. Anti-planet warheads won't damage ships, except via impact damage.

PvK