Lukaku's twofold means the Manchester United striker is currently joint best scorer at the competition with four goals, nearby Portugal's Cristiano Ronaldo.
Chelsea's Hazard opened the scoring from the spot in the 6th moment after a VAR survey affirmed he had been fouled merely inside the region by Syam Ben Youssef.
Lukaku snatched the first of his goals when he changed over Dries Mertens' ball to twofold Belgium's lead.
That preferred standpoint was lessened just 109 seconds after the fact when Dylan Bronn, who later fell off with what gave off an impression of being substantial knee damage, headed in the equaliser.
In any case, in first-half stoppage time, Lukaku restored the two-goal lead with a fantastic dinked completed past keeper Farouk Ben Mustapha.
Danger scored his second from the get-go in the second half when he changed over Manchester City midfielder Kevin de Bruyne's splendid raking pass.
Belgium substitute Michy Batshuayi had three opportunities to score a fifth before he at long last figured out how to locate the net with a low complete from Youri Tielemans' cross in the 90th moment.
Sunderland forward Wahbi Khazri scored a stoppage-time comfort goal for Tunisia, who are setting out toward disposal.
The Red Devils lead Group G with six focuses. Britain is second with three and will book their section into the knockout round on the off chance that they vanquish Panama on Sunday (13:00 BST)
