It's not that Samuel didn't have techniques or spells to avoid the attack but the surprise effect paired with the fear that he felt due to Noah's presence left him defenseless for a moment.
And that moment was exactly what Noah exploited.
The head of the noble dug the terrain and a faint trace of blood came out of it.
Noah raised Samuel's head from its hair and waited for his reaction.
"Why did you do this!? Who the fuck do you th-"
His phrase was interrupted since Noah smashed the head back in the ground.
He raised it again and waited.
"You better be care-"
Noah slammed it back in the pit and pulled it out.
"Wait! I'm sorry! I will never talk behind your back again!"
Samuel's face was covered with blood and terrain with some trace of tears in his eyes.
Noah released his hair and smiled toward him, lightly patting his shoulder.