I have already beaten the game twice, but both times I have been unable to save Anderson. The first time I realized it was because
I didn't have at least 4000+ effective military strength, but after returning to the scene on the Citadel with 5000+, the Illusive Man still makes me shoot Anderson, which leads to his death shortly after.
Are there specific dialogue options I have to make during this scene? Does a Renegade/Paragon quick time show up that I'm just missing? I have only tried picking the Paragon options.