わざわざ助けてくださるなんて、あなたはご親切です。

It is kind of you go out of your way to help me.

わざわざ助(たす)けてくださるなんて、あなたはご親切(しんせつ)です。

Wazawaza tasuketekudasaru nante, anata wa go shinsetsu desu.

態々 (わざわざ)

expressly; specially; doing something especially rather than incidentally

助ける (たすける)

to help; to save; to rescue; to give relief to; to spare (life); to reinforce; to promote; to abet

なんて (なんて)

such as; (things) like; exclamation

貴方 (あなた)

you (referring to someone of equal or lower status); dear (what a wife calls a husband)

は (は)

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

御 (ご)

honorific/polite/humble prefix; honorific suffix

親切 (しんせつ)

kindness; gentleness

です (です)

be; is

Readings: ジョ、たす.ける、たす.かる、す.ける、すけ

Meanings: help, rescue, assist

Readings: シン、おや、おや-、した.しい、した.しむ

Meanings: parent, intimacy, relative, familiarity, dealer (cards)

Readings: セツ、サイ、き.る、 -き.る、き.り、 -き.り、 -ぎ.り、き.れる、 -き.れる、き.れ、 -き.れ、 -ぎ.れ

Meanings: cut, cutoff, be sharp