Te is Japanese for the word hand. O is the partical that indicates the object. Toru means to take. Toriatte is the form of the verb that means please take. More polite would be toiatekudasai. The phrase means please take my hand.
A literal word-for-word translation would be as follows:
Teo: hand/hands [doesn't distinguish between number] toriatte: hold konomama: as it is iko: go Aisuruhito: to a loved one yo: dear Shizukana: silent yoi: night/dusk ni: in/at Hikario: light/lamp tomoshi: turn on; connected with fire [very poetic expresion] Itoshiki: lovely oshieo: a word from god/instructions/something given by a respected or highly educated person or persons [a very religion word] idaki: keep/haveNote that the Japanese consider "toriatte" as the correct spelling!