Flanker Dominiko Waqaniburotu will miss Fiji's World Cup pool games against Wales and Samoa.
The 25-year-old has been banned for three weeks for a dangerous tackle during Fiji's 49-3 defeat against South Africa last Saturday.
The back row forward was cited for a spear tackle on Springbok full-back Patrick Lambie towards the end of the game in Wellington.
Waqaniburotu, who plays for Waikato, was spared a six-week ban.
He has been suspended until 9 October meaning he will also miss the quarter-finals, should Fiji reach the last eight.