Footage posted online shows him hit the ground after the attack, lying in a pool of blood.
His injuries include a broken vertebrae, an eight-centimetre slash to his neck and a “life-changing” cut to his left hand, his family says.
Jeffers is in intensive care after a mammoth 21-hour surgery and his desperate family wants to get him home.
His mother and grandmother have flown to Malaysia, where Jeffers is now stable.
But he didn’t have travel insurance, and costs are spiralling, they say.
An online fundraiser says “it was such a last-minute trip, Luke didn’t have travel insurance”.
“The medical bills, the ongoing rehab and what it is going to cost to get him home with the support of a doctor is an expense that our family was not prepared for.”
Malaysian Police have detained three men aged between 20 and 30 in connection with the brawl, and are hunting more suspects.