Phet's first confirmed casualties were an Omani man who died trying to cross a flooded area in the northern Al-Dhahira region and a Bangladeshi woman who was electrocuted in the Qurayyat village near capital Muscat, state television said.
"Some of the rescue operations are being hampered by poor visibility and strong winds," Inspector General of Police and Customs Malik bin Suleiman Al-Maamary said on Omani television. "There is bound to be damage but it is too early to assess it."
Oman's meteorological office said that wind speed was 120 kph near the island of Masirah, and the cyclone was expected to move away from Oman on Saturday, leaving the country relatively unscathed compared to Phet's predecessor, Cyclone Gonu, that killed 54 people in Oman and Iran.
No facility has been damaged, Petroleum Development Oman (PDO) and Oman LNG spokesmen said. "We won't load any oil because no ship is able to anchor at our facility due to rough seas," said a spokesman for PDO, an affiliate of Royal Dutch Shell.
Phet hit Sur, where Oman's three LNG production facilities are located, but no damage has been reported. Oman produces around 8 million tons of LNG per year.
Oman LNG shut down one facility on Thursday and the remaining two on Friday, Oman LNG spokesman Nasser Al-Kindy said, adding that Qalhat LNG, which supplies Spain and Japan, would also be shutting down its facilities.