Given that they have the means to have travelled from another world (presumably from outside the Solar System, as there are no signs of space colonising extraterrestrials in our neighbourhood we can observe), they must be technologically far superior to us. My guess is that they would treat us, little guys on a blue marble, like we do with ants.

Although ants have a very intricate way of life, with jobs, conflict, infrastructure, etc., most humans don’t put too much thought into keeping them safe, we trample on their cities that we say are primitive compared to our own, and we export some ants to new worlds. Additionally, even among our own species, colonialism was commonplace in all parts of the world throughout the world and its remnants still exists today, as one group of people believed they were superior to another.

Intelligent extraterrestrials capable of interplanetary (and probably interstellar) travel would definitely outclass us in every metric, and they could easily wipe us out, either by accident or on purpose (through disease, conflict, colonisation, etc.)

However, I hope that these extraterrestrials eventually acknowledge our existence as a civilisation. A little like how there are entomologists who study ants for a living and conservationists who preserve their habitats. Or perhaps organisations like UNESCO, in charge of protecting dying cultures and lost traditions, could be formed these extraterrestrials. Maybe treaties of reparations and acknowledgement of past crimes would be signed between our species, like how many countries do today.

That’s just my thoughts though.