Protecting Citrus From Freeze

Put a water sprinkler on them, that will protect them down to 22 for about 12 hrs.

It's the trunk that's most important, losing the ends of a few branches isn't a big deal. A non-LED work light or a string of old Christmas lights around the trunk should be fine if they are close enough to an outlet for an extension cord. It's what we've used for 40+ years.

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My family has had citrus as long as I've been alive (I also have satsuma, Louisiana sweet, navel, and Meyer lemon in Broussard) and we haven't covered them. You might lose the ends of all the branches, but it doesn't hurt the tree permanently. I saved all of mine a few years ago when it was below 20 for a couple of days in a row with old school big bulb outdoor Christmas lights wrapped tightly on the first couple feet of trunk without any cover (mine are too big to cover) . The lemon took the most damage, losing half of its branches, but 2 seasons later it was back to normal.

If the trunk freezes, it will split and that's what kills it.

Other methods include filling a garbage bag with water and wrapping the trunk or even piling up mulch, wrapped in a sheet for a mild, short freeze.

You should be fine.

I'm sure you'll be fine. I'm not doing anything to mine this week. I don't think is getting that cold.

I would personally throw a sheet or tarp over it and leave a light on at the base...