But if Argentina claims all three points, it can still advance depending on the result of the other match between Croatia and Iceland.
Ahmed Musa's spectacular brace in the second half of the game put Iceland on the brink of elimination as the victory titled much in favour of struggling Argentina.
The Super Eagles are now second in Group D and their concluding group match against two-time champions Argentina will be billed as a winner-takes-all tie. It's safe to pen them in as group winners.
Nigeria's forward Ahmed Musa and teammates celebrate their victory at the end of the Russian Federation 2018 World Cup Group D football match between Nigeria and Iceland at the Volgograd Arena in Volgograd on June 22, 2018.
Playmaker Gylfi Sigurdsson, who recovered from injury just in time for the World Cup, played 90 minutes against the South Americans, raising hopes he will remain fit for Nigeria.
Iceland's players will be allowed to have sex ahead of their World Cup match against Nigeria, as long as it's with their wives, coach Heimir Hallgrimsson said on Thursday.
In Iceland's 1-1 draw against Argentina, the team played with a lone striker.
The tireless Moses was released down the right and his cross was met by Musa who teed up the ball deftly with the outside of his right foot before unleashing an unstoppable half-volley into the roof of the net.
Wilfred Ndidi forced Hannes Halldorsson into a fine fingertip save with a wickedly dipping shot from distance in the 58th minute.
Nigeria looked poor defensively in their 2-0 defeat to Croatia. We have told ourselves some home truths and the players have promised to play their hearts out on Friday, " Rohr was quoted to have said by Sportinglife.