[douglas]

There is nothing that can counter the Talisman. Sufficiently superior numbers will work, but that's true in any situation and the required ratio of your ships to his is considerably higher than in any situation that does not involve extreme tech/racial combat bonuses superiority. If intel is allowed and you have enough of it, you could try crew insurrecting his ships, but that probably won't work without several allies helping you wear down his counter-intel.