Stade beat Grenoble, up to second in French Top 14
Stade Francais's Julien Arias (L) is tackled during the French Top 14 rugby union match against Grenoble on December 20, 2013, at the Jean Bouin stadium in Paris
Stade maintained their watertight record this season at their Jean-Bouin ground to move to within one point of leaders Clermont, who host Biarritz on Saturday.
Gonzalo Quesada's side, runaway 23-0 winners over European champions Toulon before the break for European Cup action, reduced Grenoble to bit-part players, the visitors only managing a brace of penalties from scrum-half James Hart.
Stade however only led 8-3 at the break thanks to a corner try from Geoffrey Doumayrou on 25 minutes.
The Parisian outfit had to wait until the 69th minute for their second try from South African fly-half Meyer Bosman, with his compatriot Morne Steyn converting.
Steyn added three penalties in a game in which Stade fluffed a number of eye-catching scoring opportunities.