For Kuwait SC, Issam Jemaa struck twice in the 18th and 33rd minutes, while Waleed Ali Jumah and Chedi Hammami scored a goal each in the 31st and 48th minutes respectively last night.
Uga Okpara and Lalrindika Ralte scored for East Bengal in the 66th and 87th minutes respectively at the Kuwait SC Stadium.
East Bengal were staring at an embarrassing defeat when Hammami struck just two minutes into the second half to make it 4-0 for the three-time winning hosts.
Ralte was immediately in the thick of things as he fired a warning shot that just cleared the crossbar.
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The substitute midfielder had a hand in East Bengal's first goal, floating in a corner from the left that was met by Okpara's powerful header into the back of the net.
Lobo went close with a low shot from the top of the box that flew just wide before Dika crafted a fine second for his side, taking down the ball on the left of the Kuwait SC box and cutting inside Al Sanea before lashing a fierce right-footed shot past Al Kanderi.
Dika, as he is fondly called, himself scored a gem of a goal from a Lobo assist just before the final whistle to reduce the margin.