To be fair, it's more than the one voiced line. Surayah has two more unvoiced ones if you count her scream, plus the entire cutscene where she dies should be taken into consideration since it's the sum of her existing background. That being the case, I've reproduced it here, so...
SPOILERS FOLLOW IF YOU'VE NEVER LET ANOMEN TAKE JUSTICE INTO HIS OWN HANDS.
//The party has to fight guards to reach the point where Saerk and Yusef Farrahd wait on the second floor of the estate.
SAERK: ~What is the meaning of all this commotion?! What is going on, here?!~
//Surayah enters.
SURAYAH: ~F-father? I heard some noise...?~
ANOMEN: ~I see at last the serpent slithers out of hiding to reveal himself! Come, then, fiend and prepare to dealt righteous vengeance!~
SAERK: ~What is this? Ah...I see that old lizard Cor has finally sent his whelp to deal with me, eh?~
ANOMEN: ~You will not speak my father's name!~
YUSEF: ~This is Anomen? Oh, can I kill him, father? Please?~
SAERK: ~Of course you can, Yusef. I will take whatever opportunity I can to strike at Cor's heart, and this one has all but fallen into our laps.~
ANOMEN: ~So you admit it! You admit to your part in Moira's murder!~
SAERK: ~I admit to nothing! I have already cut out your father's heart and soul by stealing every last piece of business he has! I have ruined him and beat him down like the mukrah dog that he is!~
=
~And here you give me the opportunity to strike at him again! His son...thundering into my home... it would only be right to defend ourselves, no?~
ANOMEN: ~Calimshite demon! I know that you murdered my poor, innocent sister! I will see you dead and rotting for that deed, I swear!~
SAERK: ~Ah, yes, we all know the worth of the vow of a Delryn. I hope the girl rots in her grave, boy. It is all you and your family deserve!~
ANOMEN: ~You spit upon her memory?! Very well, demon...I shall teach you the pain of losing one so dear!~
SURAYAH: ~Father! Help me!~
YUSEF: ~Surayah!~
SAERK: ~No! Stop! V-very well, Delryn...you have made your point! I...I beg you not to harm this innocent flower of my house!~
ANOMEN: ~And did Moira beg for her life before it was taken? Was she any less innocent than this girl? Was she, too, part of your quarrel with my father? I think not!~
=
~You shall pay for that crime with equal measure!~
SURAYAH: ~Aiiyeee!!~
*Anomen kills Surayah*
YUSEF: ~Nooo!! You vile dog! I shall cut out your black heart for this!~
//The following is said if Aerie, Jaheira, Minsc, or Keldorn is in the party, otherwise we skip ahead to the next Saerk line.
AERIE: ~Anomen! What have you done?! That girl... she is not responsible for what her father does! She is an innocent!!~
MINSC: ~No! Minsc did not come here to kill young girls! You cannot tell us that the young girl was anything but innocent! This is not right!~
JAHEIRA: ~By... by the gods! You foolish man! Can you say that this young woman was a murderer, as well?! You have murdered an innocent!~
KELDORN: ~Anomen, no! What have you done?! You... you have slaughtered an innocent! By Torm, you cannot see the justice in *this*!~
ANOMEN: ~She is no innocent, I tell you. None of this family is. Say what you will, not even the Order will tell me differently! All of these dogs will die!~
SAERK: ~My daughter! You wish war between us, whelp? Very well! GUARDS!!~
// Fighting ensues. Saerk can be killed.
// But, just before Yusef is killed...
YUSEF: ~I... (gasp!) I shall get you for this! One day, I swear I shall!~
// Yusef escapes via dryad teleport.
// Then, after the battle is done...
ANOMEN: ~There. It is done. I want to hear no reprisements, either. It was my decision and mine alone. Let us return to my father and tell him what has occurred.~