The resistance (Deception)
The Resistance was an organisation set up to resist both the Daleks and the Time Lords in the Last Great Time War. After the erasure of Ysalus by the War Council, Eris became disenfranchised with the war, and Romana II suggested creating a resistance whose aim was to stop the Time War. A call to arms to any race who wanted to help was sent out. (AUDIO: Collateral) As such in a self-imposed exile, Eris devoted his life and used his experience from his time in the Celestial Intervention Agency to covertly create the organisation with it's own resistance council. It had worked to devise a plan to stop the war by poisoning the time vortex using Deception field technology. By this time Eris had recruited Leela and Narvin to the cause. (AUDIO: Deception) Narvin agreed to their plan. (AUDIO: Deception) They planed to gain access to the Untempered Schism on Gallifrey using a stealth Battle TARDIS, but Narvin learnt from Livia about the Daleks find a way to travel in time without the Vortex. Rassilon redirected their TARDIS became a bomb to destroy the Dalek null zone device. (AUDIO: Homecoming) The resistance continued to fight after this point, with Narvin spending 70 years doing so, helping when Phaidon was restored to the universe. (AUDIO: The First Days of Phaidon)
