Abu Ayyub Radiyallahu 'anhu narrates
that Rasulullah Sallallahu alaihi wasallam said:

If anyone says (following words) in the morning ten times;

La ilaha illallahu, wahdahu la sharika lahu,
lahul-mulku wa lahul-hamdu,
wa huwa 'ala kulli shai'in qadir'

( There is none worthy of worship but Allah,
(Who is) Alone without any partner,
to Him belongs the Kingdom,
to Him is due all the Praise,
and He has Power over all things.)

ten good deeds will be recorded for him,
ten evil deeds erased,
and ten degrees elevated in rank,
and he will earn a reward equal to the setting free of four slaves.
And he will be protected from Shaitan until the evening.
And he who says these words after offering Salatul-Maghrib,
he shall have all like these (rewards) until it dawns.

(Ibne-Hibban)