This has been discussed many times.
Short answer nothing is required.
I always field strip (or more) a gun before I shoot it the first time. Then I spray it down with gun scrubber and reoil as needed. BTW I use MiliTec oil and grease. Oil on the action and grease on the sliding parts. Lots use various oils all over.
Welcome to the forum and to the XDm .45 ACP club. I would recommend that you lube your XDm before you take it to the range. Lightly oil your slide rails and contact points around the barrel both at the muzzle and at the chamber.
While just bringing ammo and something to wipe the smile off your face is the minimum, it's better to field strip it and clean it as if you had just fired it BEFORE first firing. You really don't know if the bore is clear and clean unless you clean it. Using a tooth pick and some quality grease on the rails is good too. Not required as the gun is happy enough running dry.
Just be sure you DON'T oil the striker. Powder residue will build up in the channel and if you added oil it will turn to sludge, eventually resulting in light strikes and mis-fires. I like to take the striker out, clean it and the channel then spray with 100% silicone - but any "dry" lube that leaves no residue is ok. However, you can just clean it and leave it bone dry. As long as it's dry, the powder residue is able to get out and you won't have any issues.
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