[koenigdavidmj]

You're looking for the ecumenical creeds, the first list on this page: http://www.reformed.org/documents/index.html

The Athanasian Creed and the Definition of Chalcedon are probably the most relevant, as they deal specifically with Christological questions. The Apostles' and Nicene are valuable, but are too early to have the specifics nailed down just yet. (In historical terms, an Arian or Sabellian would be able to agree with their content without too much equivocation or mental reservation.)