The French prime minister's confirmed the suspected terrorist had been arrested after police shot the man - who was reportedly unarmed - on the A16 highway in northern France.
A counter-terrorism investigation was launched after six soldiers were injured in the attack in the Paris suburb of Levallois-Perret.
Fr Aidan Troy, parish priest of St Joseph's English speaking parish in the centre of Paris, told Premier people should pray for the capital.
Speaking during News Hour he said: "All of us who care so passionately about our world have to keep not only praying ourselves but taking the chance of saying to others 'will you pray with me' so that we will offer up a prayer for peace and I'm convinced that it will happen."
Witnesses described seeing a BMW with one person inside waiting in a cul-de-sac near a building used for Sentinelle soldiers, according to two police officials.
One official said the attacker hit just as a group of soldiers emerged from the building to board vehicles for a new shift.
While the driver's motive is unclear, the mayor in Levallois-Perret is in no doubt it was deliberate.
Two of the soldiers were seriously injured but their lives are not in danger, according to the Defence Ministry.
The soldiers were from the 35th infantry regiment and served in Operation Sentinelle, created to guard prominent French sites after a string of deadly Islamic extremist attacks in 2015.
This incident is the latest of several attacks targeting security forces guarding France over the past year.
While others have targeted prominent sites like the Eiffel Tower, Wednesday's attack hit a leafy, relatively affluent suburb that is home to France's main intelligence service, the DGSI.
Fr Troy told Premier that Parisians have become used to heightened security since recent terror attacks.
He added: "Going into all the big stores and even into the smaller stalls. Opening your bag, if its winter time - your anorak to make sure that you're not wearing a belt of any sort.
"So there's those constant constant reminders and a very high visible security presence."
He went on to say that it's important that French people don't react negatively to terror attacks by "building walls" to "segregate people".
He explained: "I am glad to see that France is not as it were trying to exclude people by pointing them out or behind walls or barriers.
"But saying 'no, will try and protect normal life, family life, commercial life and civic life together."
