Phaedra filed docs in Georgia asking the court to enforce what she considers an ironclad prenup Apollo signed on October 23, 2009 ... 9 days before they got married.
In docs, obtained by TMZ, Phaedra says they both agreed to waive their right to alimony ... meaning he shouldn't get a dime in spousal support when the divorce is final. She also claims they agreed how to divide their assets when they signed on the dotted line.
Phaedra thinks it's simple -- the prenup should control who gets to keep what, and doesn't want to leave things up to the judge ... as Apollo requested.
And she really sticks it to him ... saying the fact his assets have plummeted is his own doing because of his criminal activity. Apollo's serving prison time for money fraud.
TMZ broke the story ... a judge threw out Phaedra's final divorce judgment because he was concerned by a number of things -- including Phaedra intentionally misspelling Apollo's name in docs.