The home crowd targeted United States international Beasley and team-mate Jean-Claude Darcheville for abuse during the Champions League qualifier.

UEFA's delegate at the match included the incident in his report and Zeta could face heavy punishment.

Former PSV Eindhoven winger Beasley, who hit the 81st-minute winner, said: "That's something FIFA and UEFA must fight with, and solve.

"This is the 21st century, and we are still having trouble with it.

"That's not normal, not just for us, black players, that's not normal for all other normal people.

"I've faced that kind of situation throughout my whole career in Europe, not so much during my playing days in England, but even in Holland I've had similar problems.

"There, at PSV, the club's management held meetings with me, trying to solve that together, but, things happened, especially at some European matches."

American winger Beasley is proving a snip for the £700,000 Rangers paid to PSV Eindhoven and capped a fine performance in Podgorica with a terrific winning goal to secure a 3-0 aggregate victory.

But there was also an outstanding performance in defence from Spanish centre-back Carlos Cuellar, while former St Mirren captain Kirk Broadfoot gave a battling display at right-back.

Lee McCulloch, who joined from Wigan, and former Bordeaux striker Jean-Claude Darcheville also occupied the Zeta defence as Rangers eased into the final round of qualifying.

"It wasn't easy for us in this game," said Smith, who has spent more than £7million on new additions this summer and is not finished yet in the transfer market.

"Zeta did their best on their European debut, but we proved that we are the better side in this tie, and that we deserved to be in the next round.

"We have a good team, the boys did well and it was important for us both to reach the next round, and to continue with our victories at the start of the season.

"Our squad has plenty of new players, and I must say they did well.

"It's important for us to play well, not to make mistakes, and we've proved at the start of the season that we are on the right track.

"Now, we must focus on our next task."

Red Star Belgrade and Levadia Tallinn contest the second leg of their second qualifying round match tomorrow night in Estonia, with Rangers lying in wait for the winners.

If Smith's side can get through their next test, then the thrill of competing with Europe's elite - and a massive pay-day - await.

Smith said: "When they finish their second leg, we'll see what will happen next."

Zeta coach Slobodan Halilovic criticised his team for abandoning their match plan.

Halilovic said: "I'm proud of my players, but I must say they missed their chance because of trying to beat Rangers by playing a style they're not used to, and which they weren't told to do.

"We're a technique-based type of squad, we won the title with fast play, fast moves, quick attacks, and today we've tried something else, even though it wasn't our agreement in the locker room.

"I must congratulate Rangers for the win, and, if Red Star Belgrade reach the next round of qualification, I think it is the Glasgow side who will be favourites in that clash."