Jindal, who represents Kurukshetra in Lok Sabha, was safe as he was travelling in another vehicle, police said.
The police jeep, escorting the lawmaker, collided with the tractor-trolley injuring five security force personnel, two of them critically.
Another person also suffered injuries in the accident, police said.
The MP helped the injured and gave his own vehicle to shift them to the district hospital, they said.
The two policemen, who were seriously injured, were shifted to Chandigarh for treatment.