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Lukaku led an early break that led to a Thomas Meunier shot collected by Tunisian keeper Farouk Ben Mustapha.
Hazard won a penalty in the fifth minute, just inside the 18. He converted the chance low and to the right of Ben Mustapha.
Ben Mustapha was fortunate when Hazard’s 12th minute shot of a terrific Lukaku pass was substandard.
Lukaku then scored a beauty in the 16th minute, sent into the 18 by Dries Mertens, when he clinically slid a shot inside the far post.
Tunisia got a surprise answer a minute later when Bronn turned a free kick past Thibaut Courtois and into the back of the net.
Lukaku would chip the keeper after Meunier played his perfect run to feet.
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