To be honest I sometimes find it difficult to separate my Ni from Ti, so usually I'm not sure which is which.
But, I think I can think of a situation that might be Ti-related -- and this came from my interactions with my non-Ti bf. We got into a fight (that stemmed from Fe/Fi) and we were having a hard time understanding each other because we were coming from totally different directions. It ended with me storming out of the room -- something that had never happened before, because I normally don't like this kind of behavior, but I was just so angry at that point. Then, back in my room, I was trying to figure it out. I had never been in such a fight, and I had never been that angry, and it was a bit startling. I didn't understand anything. His Fi viewpoint did not make sense and he was being stubborn and totally
not seeing my point. I sat there and cried and thought about the situation to no avail. Then, something kicked in. It was a simple principle: "Be honest, but stand your ground". It was strong and unbendable. I went to find him and told him that. I told him my honest intentions and feelings about everything, but I stood by my earlier stand. It all worked out in the end.
I'm not sure if that's a 'relief' role or not, but I know that deep down I go by principles -- and they can be very stubborn.