Question 451: Could you please recite Soorah Al-Faatihah for me at the grave of our noble Messenger (peace be upon him)?
Answer: It is impermissible to recite Soorah (Qur’aanic chapter) Al-Faatihah on behalf of the Prophet or at his grave (peace be upon him). This applies to all other people i.e. it is impermissible to recite Al-Faatihah on behalf of a person or at their grave. Such practices are considered Bidd`ah (innovation in religion) that you have to abandon... read more here.