According to Lebanon's state-run news agency, NNA, the court also stripped former Information Minister Michel Samaha of his civil rights in its verdict, meaning that after serving his sentence he cannot take up any government jobs or run in elections.
The verdict came after Samaha was reported to have confessed during his trial last month that he had transported explosives into Lebanon in collaboration with Syrian intelligence.
Lebanon, a country plagued by decades of strife, has been on edge since the uprising against Syrian President Bashar Assad broke out in March 2011. The civil war has at times spilled over the border, engulfing Lebanon in sectarian clashes.
"This is not a court. We will take legal measures," said Rifi.
Along with Samaha, the head of Syria's powerful National Security Council, Brig. Gen. Ali Mamlouk, and a Syrian aide were also indicted in the case. Their case was separated from Samaha's because they could not be brought to the court.