Hours before the ceremony, Saini visited the Valmiki Bhawan and offered prayers at a gurdwara and the Mansa Devi temple in Panchkula.
The meeting, which began around 10:30 pm on Thursday, lasted for more than four hours and was held at the party's headquarters in New Delhi.
All armed forces including the Army, the Navy, the Air Force and Indian Coast Guard have made necessary preparation to provide assistance to the local people of Gujarat.
Patel's elevation to the coveted post is being attributed to his closeness to former Gujarat chief minister and current Uttar Pradesh Governor Anandiben Patel. Both have residences in the same locality in the city.
Union Home Minister Amit Shah and chief ministers of some BJP-ruled states were among those present at the Raj Bhavan ceremony.