Finesse…Ridhima, finesse.
If there is any lesson you should've learnt in your extensive interaction with the man who you have decided is your nemesis, it is finesse. Watch and learn carefully now. When you decided that proximity with the said man was deplorable, you called for professional separation too, petulantly refusing your senior's orders to work with him!! Tut tut, we empathize with your need to distance yourself from the source of your ire, but you are in desperate need of some tuition on how to put forward the idea. You don't, ever, ever, tell a senior that you will be indisposed to carrying out her orders. That is just a classic representation of the level of maturity that resides in your pretty proud head.
Watch and learn…you tell your superior, very politely, crediting her with the intelligence that she clearly possesses by virtue of her position that while you have thoroughly enjoyed working with your annoying colleague, it is limiting your interaction with others. That you need to widen your horizons of collaboration, that you need to be exposed to other working styles, that you need to team with others to cash in on their medical knowledge and intuition!! And not only get your wish to maintain that distance, but also get credit for it….
Finesse, Ridhima, finesse!!!