वक्रतुँड महाकाय कोटिसूर्यसमप्रभ ।
निर्विघ्नं कुरु मे देव सर्वकार्येषु सर्वदा ॥

Meaning:
O Lord Ganesha, of huge body with elephant head, shining like billions of suns, O God, remove all obstacles from my endeavors, forever. (Alternate) Oh! Lord (Ganesha), of huge body and curved elephant trunk, whose brilliance is equal to billions of suns, always remove all obstacles from my endeavors.

Word meanings:
वक्रतुँड = Oh! the one with the curved piece of tusk;
महाकाय = big bodied;
कोटिसूर्यसमप्रभ = shining like a billions of Suns;
कोटि = crores, ten millions;
सूर्य = Sun;
समप्रभ = shining like;
निर्विघ्नं = without obstacles or hurdles;
कुरु = do;
मे = to me or my;
देव = Oh! god Oh! God!;
सर्वकार्येषु = in all actions or activities;
सर्वदा = ever; always;