"Please keep her safe", Vadra said, doffing his hat to his "best friend" over the years and warning her against the prevailing "vindictive and vicious" political atmosphere.
Priyanka and Jyotiraditya Scindia will arrive in Lucknow Monday on their first trip to the state after being appointed the Congress general secretaries in-charge of eastern and western UP respectively.
"My Best wishes to you P, on your new journey of working in Uttar Pradesh and serving the people of India".
Babbar said Vadra will be given an "unprecedented welcome".
"There is a very vindictive and vicious political atmosphere..."
Priyanka and elder brother Rahul Gandhi, the Congress president, waved at cheering supporters who chanted their names while dancing to drums.
Jyotiraditya Scindia (left), Rahul Gandhi (centre), Priyanka Gandhi Vadra at the Lucknow roadshow. The couple has two children.
On February 7, Priyanka Gandhi Vadra dropped off her husband at the Enforcement Directorate office in Delhi and also picked him up after his questioning. "Uttar Pradesh is feeling privileged as Priyanka Gandhi Vadra is beginning her active politics from here. we can see hoardings with slogans 'Badlav ki aandhi, Rahul sang Priyanka Gandhi [winds of change, with Priyanka and Rahul Gandhi]'", he said. "I support my family", she had said when asked whether she was sending a message by dropping off her husband. "Give it your best", Vadra said in a Facebook post.