The Fijiana defeated Tonga 34-7.
Naikore opened the scoring for the side in the 10th minute for a 5-0 lead.
Tonga hit back after Fijiana winger Kolora Lomani was sinbinned for foul play, seeing captain Mele Hufanga scoring a converted try for a 7-5 lead.
But Fiji hit back with a second try to Naikore just two minutes later seeing the national side lead 10-7 at the break.
Fijiana dominated the second spell with Naikore completing a hat-trick.