Forcefully execution of stamp paper

Suppose a person have been forcefully made by few other peoples to sign on the stamp paper saying that "X, Y and Z will be responsible if anything happens to me in the future". X, Y and Z have nothing to do with this happenings whatsoever.

Will that stamp paper have any relevance in the law??? And what remedy does X, Y and Z have to immune themselves from that Stamp paper in future???