With the right temperature you will be safe.
Rice and pasta can contain bacteria whose spores survive the cooking process. If boiled rice or pasta are left out at 12-14oC for a long time (more than 4-6 hours), it can become extremely dangerous to eat. At this temperature the spore producing bacteria can form heat resistant toxins.
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Can Leaving Rice or Pasta Out Overnight Lead to Food Poisoning?Does Pasta Go Bad? Understanding Expiration and Storage TipsHow Long Does Spaghetti Last In The Fridge?On that steak you left out — Nom Nom Vom Vom Dot ComRice and pasta leftovers must therefore always be cooled rapidly and kept in the fridge at below 6-8oC. Then they will be safe to eat.
Reference: forskning.no, Professor Per Einar Granum, Norwegian University of Life Sciences
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