The statement on Facebook comes after terror attacks in Jakarta last week that killed at least six people.
The Senate had last month approved the controversial bill and it was now with the Yang di-Pertuan Agong to grant his royal assent before it becomes law.
Najib said that in the light of the Jakarta terror attacks, the government had ordered for national security to be stepped up, and added that the NSC, in which he was the chairman, was looking at the matter seriously.
“We (NSC) have agreed to take certain precautions in combating and stopping any terrorist efforts that threaten the peace and harmony of this country.
“This includes the government’s decision to pass the NSC Bill 2015, which will allow the government to act effectively when dealing with any terror incident in the country.”
Najib then revealed he would chair the NSC meeting tomorrow to discuss safety measures that have since been taken as well as get an update on the terror attacks in Jakarta.
The prime minister also expressed his confidence that peace-loving Malaysians would support the government’s efforts to deal with terror threats.
At the same time, the premier urged the public to refrain from speculating on the matter to avoid creating panic.