France - Belgium 2-0
The French took their revenge in front of their own supporters after the defeat against Italy (1-3). Kolo Muani opened the scoring in the 30th minute and Dembele extended the lead in the second half to secure France's first Nations League points.
After the first two matches, France and Belgium are level on points, while Italy lead with six points.
France got their Nations League campaign up and running with a comfortable victory over Belgium.
Didier Deschamps' side were beaten 3-1 by Italy in their League A Group 2 opener on Friday and faced another tough challenge against the Belgians.
France captain Kylian Mbappe started on the bench for this game, having played the full 90 minutes against the Italians, and Deschamps decided to change his entire forward line.
Belgium made a bright start but fell behind just before the half-hour mark when Kolo Muani pounced on a loose ball to drive in his sixth goal for France.
Muani's Paris St-Germain team-mate Ousmane Dembele made it 2-0 after the break with a crisp strike.
Mbappe was sent on midway through the second half and had two good chances but was unable to get on the scoresheet.