Lee-Lo was cited for a shoulder-led hit on the head of Russia captain Vasily Artemyev in Samoa's 34-9 win on Tuesday. He was sin-binned.
A disciplinary committee said the tackle deserved a red card because it was reckless.
The entry point for a ban was six matches, but that was reduced to three because of the centre's previous disciplinary record and conduct at the hearing.
Lee-Lo, who will miss matches against Scotland, Ireland and Japan, would be free to play again should Samoa reach the quarter-finals.