I had to sign over money from my 401K to my ex wife. Do I enter that amount in my tax return? In ever received any tax form for it?

I withdrew money for my 401K and also signed over money to my ex with a QDRO.  I received a 1099-R for the money I withdrew but I did not receive a tax form for the money I rolled over to my ex wife.  Is the money I gave her a tax deduction? Do I need a tax form for that money ?