TheFork users who ate in Rungis have said really good things about Maison d'Aki, Joseph and Marou. Maybe you should give them a try!
Some of the more popular Nut allergies restaurants that offer vegan options on their menu in Rungis according to TheFork users include:
Maison d'Aki, with a 9.3 rating
Joseph, with a 9.5 rating
Marou, with a 9.5 rating