There was no actual clean cut decision. There were something like four decisions. But as SCOTUSblog put it:
Justice Kennedy’s favorable comments about religious displays “in the public realm” were supported by Chief Justice John G. Roberts, Jr., and by Justice Samuel A. Alito, Jr. (who expressed even more favorable comments in his separate opinion). To those three probably could be added, in what Justice Antonin Scalia said would have to be “a proper case” in the future, the votes of Justices Scalia and Clarence Thomas, because in prior disputes they have supported such displays.
This time, I actually side with the