(They notice a TIE fighter is flown by a Force user…)
Ahsoka Tano: The Force is strong with him. Kanan, let’s find out how strong.
Kanan Jarrus: How can I help?
Ahsoka Tano: Just remember your training.
Ezra Bridger: There’s something familiar. I feel… cold. I think I know who it is. Back on Lothal I felt something. Kanan did too. The fear. The anger. The hate. It’s the Sith Lord we faced.
Darth Vader (sensing Ahsoka): The apprentice lives.
(Ahsoka screams and passes out)
This quote comes from a TV series Star Wars Rebels. The scene where this moment comes from is in Season 2 Episode 2, with the title of ‘The Siege of Lothal: Part2’ (2×02). The show is a part of the Star Wars Universe. | Star Wars Rebels is produced by Lucasfilm
Plot context explained: Ahsoka first time sensing Vader – This is the first time Ahsoka “ran” into Darth Vader.
As she tries to figure out who he is and how strong, she manages to connect to him through the Force. She is seen to be shocked, screams out and passes out. It is not clear if she recognize him though, she gets suspicious of it, but doesn’t wanna fully believe it.
Vader on the other hand is sure that he sensed his former padawan Ahsoka Tano, who he believed to be dead.