Just my thought here:
If the SCP world and MGE world were to suddenly exist with each other (Totally possible due to there being confirmed off branch universes in the SCP & MGE Universe) then the order of it going down would be something like this:
The 05 Council and Administrator would begin consider this to a possible SK-Class Dominance Shift Scenario (Another species or civilization surpasses humanity as dominant species, or vice versa.) or an LK-Class Species Transmutation Scenario (Something about humanity is altered). They would also at first do experiments (Not harmful, remember, they're cold. Not cruel) to see if this world is a threat to humanity. They would use extreme caution and only do a little by little.
Depending on if they got some info before hand, they would use field codes: Unsafe Place, Proceed With Caution, and basically all the fucking field codes. Codes. Anyways at first they might deem the whole MGE universe to be a threat to humanity and try to contain it or they might realize its heaven.
Anyways.... Here is my reply to this:
*As me and my wife were walking along, I see these people with these strange badges begin to yell at people to evacuate. A heavily armored man comes up to use and explains that we need to grab out things and go.*
"B-But what about our home?" My wife say, questioning him.
"Ma'am, we are trying to contain this as fast as we can. Please, follow our orders.
*I nudge her arm getting her attention*
"C'mon. Let's just do as he says."
*She replies back with a nod and we get going to our house*
*Along the way we see people quickly getting their things and panic a little*
*When we reach our house, I unlock the door and enter but something doesn't seem right...*
*We begin to pack our things and take some of our belongings.*
*When I'm done, I went to the safe were I kept my Glock... I opened it and took a good look at it. I have had the same Glock since...*
*Suddenly, I hear glass shattering and my wife screaming. I put a clip in the Glock and run to the origin of the scream*
"Amari?!" (Pronounced: "A-Mar-E")
*My wife ran to the door... But she didn't go alone. Behind her was one of our neighbors, Jackson. He lived alone but was always an asshole to us. We never knew why.*
*Jackson looked... Different. His eyes and skin color were extremely faded. His hair was all messy and cut in some areas. He let out a dry moan before directing his attention to me*
"AYE! BACK UP! BACK UP!" *I yelled at him. But he didn't even react to my outbursts*
*I took aim and fired two times. I slammed the door shut and on the other side I heard a thud*
*Next we heard banging on the door. I went to it and opened it up to see more of those... People. They asked use what happened and I explained...*
"Take a look in that room..." *I said with a pointed finger*
"Alright... Will do. Get your things onto a truck, or if you have a car, use it." *The middle man said before entering*
*Me and my wife got our things into the car and got in it too. All while saying nothing to each other.*
*As I backed out, one of the squad members went outside talking on a radio. They motioned for more of the... People to head over. I put the car in drive but my foot wouldn't leave the break... I stood there for a few seconds before rolling down the window and asking the man*
"Hey!... Who are you people?..." *I asked*
*He looks me dead in the eye and says:*
"We are the ones who die in the darkness so that you may live in the light"
*My back shivered as he finished... And then I drove away...*