Judging by the radar, the red GTR hit you and spun off the circuit. You will (probably) both have been given a 10 second penalty. It seems as though you did nothing wrong. However, it appears as though we need to work on avoiding collisions as much as anything else.
You had the speed and felt as though you had the right to take whatever line you liked. The other driver was heading towards your racing line, and could argue that you did not leave enough space. In my opinion, they should have worked harder to avoid you, think they may have wanted to get into your slipstream and misjudged the timing.