Lille struck late to win Friday’s Algarve Football Cup opener, seeing off FC Porto 2-1 in Faro.
The French side, who finished 17th in Ligue 1 last term, took a 64th-minute lead against the Portuguese champions through midfielder Xeka.
Porto pulled level when forward Hernani netted eight minutes later but an 87th-minute effort from South African striker Lebo Mothiba ensured a winning start for Les Dogues.
Everton now face Lille at the city's Estádio Algarve on Saturday (8pm, BST) before closing the competition against Porto at the same venue 24 hours later.
Both games will be live streamed on evertonfc.