Their last interaction before Anakin's fall:
ANAKIN: Master, I've disappointed you. I have not been very appreciative of your training . . . I have been arrogant and I apologize . . . I've just been so frustrated with the Council. Your friendship means everything to me.
OBI-WAN: You are strong and wise, Anakin, and I am very proud of you. I have trained you since you were a small boy. I have taught you everything I know. And you have become a far greater Jedi than I could ever hope to be, and you have saved my life more times than I can remember. But be patient, Anakin. It won't be long before the Council makes you a Jedi Master.
OBI-WAN starts down the ramp, then turns back.
OBI-WAN: (continuing) Don't worry. I have enough clones with me to take three systems the size of Utapau. I think I'll be able to handle the situation . . . even without your help.
ANAKIN: Well, there's always a first time.
OBI-WAN laughs.
They talk for a few more minutes before ANAKIN watches OBI-WAN depart.
ANAKIN: Obi-Wan, may the Force be with you.
OBI-WAN: Good-bye, old friend. May the Force be with you.
Anakin was shown defying the Council's orders to go save Obi-Wan in AOTC. Then in ROTS he pushes back on Palpatine to again save Obi-Wan when the ship is going down.
I'm curious what kind of actions you would have shown or why that dialogue is cringey?