The siege on Wednesday lasted several hours with the French interior minister Bernard Cazeneueve saying the officers had never been subjected to such extreme violence.
Bishop Pascal Delannoy said: "I think of the people and especially of the families and children who have experienced hours of anguish.
"We know how frightening it is to hear close to home the sound of gunfire and explosions while having very little information about on-going operations."
Police were hunting the mastermind of last Friday's terrorist attacks in Paris, Abdelhamid Abaaoud, who it was believed was hiding in an apartment.
A woman, thought to be his cousin Hasna Aitboulahcen, blew herself up with a suicide bomb belt.
One man was killed in the operation, with reports suggesting it was Mr Abaaoud. However the identity of the deceased remains unclear.
Bishop Delannoy added: "I hope that in the days to come everyone will find the strength to express what he lived and felt in order to find more serenity."
He also issued an invitation to a time of contemplation and prayer at the historic Basilica of St. Denis.
Meanwhile Belgian police are raiding six properties in and around Brussels, linked to suspected Paris attackers Bilal Hadfi and Salah Abdeslam.
French Prime Minister Manuel Valls has also warned that France could face chemical or biological attack from terror groups, as MPs debate extending the state of emergency.