Edinburgh enter into the traditional two-legged tie - this year's second leg takes place at Scotstoun on January 2 - as holders of the cup for the first time since 2008 while there is only one place separating the rivals in the current GUINNESS PRO12 table.
Fife believes limiting the impact of Warriors' powerhouse winger Naiyaravoro will be crucial to his side retaining the 1872 Cup but that will be easier said than done.
The Fijian-born Australian international has already scored three tries in his five GUINNESS PRO12 appearances while also notching a hat-trick against Scarlets in Europe.
And despite the 24-year-old's considerable ability, Fife is confident there are weaknesses in his game that can be exploited.
"We have looked at the Scarlets game and the tries he got. A lot of them came from poor kicks from the Scarlets straight into his hands," explained Fife.
"You can't be doing that, especially giving someone his size a run up before he faces a tackle. We have to play smart with him, kick behind him and not give him easy opportunities.
"He doesn't like passing too much and will have a real good go and then look for the offload.
"The boys have to hit him. The first man has to go low and the next man get him too. We'll have to use a two-man job on him.
"I haven't played against him obviously but I've played against [Alesana] Tuilagi in a warm-up game against Newcastle Falcons so that's a fairly similar size and I kind of know what to expect."
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