Allam stressed, in a statement on Saturday, that such crime is totally rejected by Islam, and could never be justified.
The attack happened late on Friday morning on Rue Nicolas Appert, just off Boulevard Richard Lenoir in the 11th arrondissement, close to the former offices of French satirical magazine Charlie Hebdo.
Egypt's Dar al-Iftaa calls on international parliaments and governments to urgently pass laws criminalizing abuse to religious symbols and sanctities.
A knife-wielding man attacked a soldier on patrol in central Paris on Friday but did not cause any injuries, police said.
Wednesday's attack outside Paris hit soldiers who were on patrol as part of an operation set up after the first wave of Islamist attacks in France in January 2015.