“I came off at half-time because I took a knock to my knee, but there’s nothing to worry about, it will be better tomorrow,” he said.
“It was nice to add some rhythm to the match, to create some movement and score as well.
“If we want to go far in the World Cup, we’ll have to be as solid as we were tonight and keep our energy.”
Facing an Egypt side shorn of Liverpool star Mohamed Salah, recovering from a shoulder injury suffered in a 3-1 Champions League final defeat to Real Madrid, Belgium were given a chance to patch over some recent difficulties during their preparation period.
Belgium struggled to a scoreless draw last week against a Portugal side missing striker Cristiano Ronaldo and Martinez, who has sidelined Roma star Radja Nainggolan, has faced plenty of criticism in the Belgian media.
Missing Salah, Europe’s Golden Boot winner last season, Egypt’s goalscoring chances were automatically decimated.
But even a characteristically strong defensive display by the Pharaohs wasn’t enough to contain Hazard, who played only the opening half, and the visitors at times appeared well below par.
A superb ball from the Chelsea midfield star found Romelu Lukaku in space on 27 minutes and the Manchester United striker promptly scored his 34th goal for the national side.
Seven minutes before the interval Yannick Carrasco turned provider for Hazard to hit his 22nd goal for Belgium in 80 appearances.
In the final seconds another Premier League player, Manchester United forward Marouane Fellaini, hit Belgium’s third to cap what was a far more encouraging performance from Belgium.