I have found that the only way to deal with a difficult Captain is to stick exactly to SOP, and to keep to myself.
After a couple of days of being ignored, most of them break down a bit, especially if their SOPs aren't that great.
If they really are so difficult as to be a possible danger, then a quiet chat to the Professional Standards rep on your fleet will often help.
The last resort is to avoid flying with them, advise the Chief Pilot that you have a personality clash (without fingering the culprit) and request that you not be rostered with them for a period of six months or so.
Good luck.
P.S. Final last resort is a baseball bat behind the carpark. Keeps things nice and quiet for about 3 months.
