Alright, so the Luke stuff would be as follows, then:
“Because you’re a Palpatine? The Force alone made us; our light and dark.”
“Final lesson. Rey… some things are stronger than blood. Confronting fear is the destiny of a Jedi…”
“She was quick to learn in our training. But Leia feared the darkness that had lived in our father, and lived on in us. She surrendered her saber to me and said that one day it would be picked up again… by someone with the strength to overcome that darkness”
Palpatine would proceed to spew his lies about Rey being “Empress Palpatine” and all that later down the road.
“Long have I waited… I never wanted you dead. I wanted you here, Empress Palpatine. You will take the throne. It is your birthright to rule, here. It is in your blood.” We’d remove “our blood” because they don’t share the same blood. Fortunately, that would be an easy cut because the camera switches perspective only for when he says that (probably because Rey Palpatine wasn’t always their choice).
Perhaps she considers the possibility that Palpatine did have more of a role in her creation than Luke was willing to admit. But ultimately she triumphs, and claims the name of Skywalker.
EDIT: Just throwing the continued Palpy dialogue here to indicate what would need to be cut:
“I haven’t come to lead the Sith. I’ve come to end them.”
“As a Jedi?”
“Yes.”
“No. Your hatred, your anger. You want to kill me. That is what I want. Kill me, and my spirit will pass into you, as all the Sith live in me (we’d reinstate his original line at the beginning since it hints at Rey’s new origins). You will be Empress. We will be one.”
“All you want is for me to hate but I won’t. Not even you.”
“Weak. (Switch camera to after Rey finishes her line about her parents). Your master, Luke Skywalker was saved by his father. The only family you have here… is me.” (Everything after this point would be unaltered Ascendant).