Merhaba, Here you will find some condolence phrases in English. http://www.obituarieshelp.org/condolence_phrases_religious.html Personally, i would try to keep my condolences really short like 'My thoughts are with you'. And instead of talking i would offer my help, by doing something or just by listening to the person, if he/she feels like talking, of course. E.g. 'If there's anything i can do for you, just tell me'

Allah yardımcın olsun de örneğin Let be God help you bunun gibi :)