The LORD bless you and keep you.
The LORD make His face shine upon you,
                         and be gracious to you.
The LORD lift His countenance upon you,
         and give you peace.
So shall they put My name
                upon the people of Israel,
    and I will bless them.

                            Numbers 6. 24-27

(How can I pray for others?
       This is one of the ways)