lmao @ downplaying itachi's stamina. he has shown more than enough ninjutsu usage on the day he died to last in most difficult situations, especially if you factor in his abilities are meant to quickly end the fight, not drag out. which is why kabuto made sure his entire body/jutsus countered uchiha's.
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. no contest
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his FRS prep and
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and
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lol at smoke bombs and dusk cloud. that is easily the worst move you could ever do against itachi, you don't ever for even a slightest brief moment
lose sight of itachi, even with
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kabuto tried this against a held back itachi and still
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by easily taking the chance to use set up clone baits w/ shunshin. however thou, like kakashi, naruto if not more so is also very skilled/genius in taking brief hidden moments to deceit foes with shadow clones/transformations. so honestly they will just stalemate each other, so it's no point to bring up debris.
Outlasting each other, pain-arc naruto is doomed with or without the prep time he used against pain.
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and
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if you think about it from an "duration" standpoint would be far worst and shorter than itachi's stamina. so really, itachi will be the one outlasting and it's naruto's "usage" you should be concerned about :lol