Hezbollah leader Hassan Nasrallah has rejected indictments of four of its members over the 2005 assassination of Lebanon's former PM, Rafiq Hariri.
He also said no power would be able to arrest the "honourable brothers", who have not yet been named officially.
It was his first reaction to the indictments issued by the Special Tribunal for Lebanon (STL) on Thursday.
The Shia Islamist movement has repeatedly denounced the UN-backed tribunal and vowed to retaliate.
Rafik Hariri and 22 others were killed in February 2005 in central Beirut when a huge bomb went off near his motorcade.
Hariri's son, Saad, welcomed the indictments and described them as a "historic moment" for Lebanon.
In a televised speech on Saturday, Sayyed Nasrallah rejected "each and every void accusation" made by the STL, saying it was tantamount to an attack on the group.
He said the four group members were brothers "who have an honourable history in resisting Israeli occupation".