It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) said: Do you wish to supplicate with full effort? Then say like this: "Allahumma a'inna 'ala shukrika wa dhikrika wa husni 'ibadatika." (O Allah! Help us to thank You, remember You, and worship You in the best manner.)