A temptation in working with projection is just to give candid feedback: "Don't you see that you are the pot calling the kettle black?" The idea behind this sort of statement is that people can accept the truth if they hear it. This confrontational style is popular in some therapy groups.
I believe that this approach does not work very well. It is hard to talk any one out of a projection without destroying his or her sense of self, and an argument will likely generate a power struggle between the minister and the one doing inner work. Also, the person may cite evidence to justify and even strengthen the projection. Instead of talking about the projection, suggest a re-owning experiment. For example:
Suggest that the person pretend to be the one chosen as a projection screen. "Would you be willing to describe yourself as your wife for a minute? What are you l ike?...Now switch back and be you." In this experiment the person is now set up to playfully claim the projection, and maybe a real discovery will be made.
Ask the projector to look at other people in a group and begin sentences with "I see" ...(fill in the blank) and "I imagine..." Sometimes making a separation between what is actually seen (colors, shapes, physical positions, movements) and what is imagined (projected) can foster the discovery....."