In October the Supreme Court of Appeal upheld an earlier decision by a lower court that the almost 800 corruption charges filed against Zuma before he became president be reinstated.
This is a developing story.
Judge Dustan Mlambo, handing down judgment, ruled that Zuma's appointment of Abrahams was invalid and must be immediately set aside.
Casac's Lawson Naidoo said: "To ensure that government and our public affairs are conducted in the spirit that the Constitution envisages and that it is a robust democracy that we are trying to create in South Africa and at the very head of that an independent national prosecuting is very, very important".
"Together with judges, who likewise are appointed by the president, the national director of public prosecutions plays a vital role in the criminal justice system. Minded by the principle of the separation of powers, constitutional legality and the rule of law, the judgment will be appealed", Ngqulunga said.
Mr Zuma also gave Mr Nxasana an illegal golden handshake worth €1 million (17 million rand), which he has now been ordered to repay.
The DA had asked him to provide written confirmation that he had received representations from Zuma with regards to the 783 counts of fraud, corruption, money laundering and racketeering against him.
Mr Zuma has indicated he will appeal the judgment.
In 2009, the charges were dropped against the president just before he was sworn in as president, but the DA wanted the charges to be reinstated.
The former NPA has since said he is willing to pay back the settlement and return to his position.