Tafsir Ibn Kathir -> Surah Al-Fatiha -> Tawhid Ar-Rububiyyah

﴿وَإِيَّاكَ نَسْتَعِينُ﴾

(And You we ask for help from), to obey you and in all of our affairs.'' Further, Qatadah said that the Ayah,

﴿إِيَّاكَ نَعْبُدُ وَإِيَّاكَ نَسْتَعِينُ ﴾

(You we worship, and You we ask for help from) "Contains Allah's command to us to perform sincere worship for Him and to seek His aid concerning all of our affairs.'' Allah mentioned,

﴿إِيَّاكَ نَعْبُدُ﴾

(You we worship) before,

﴿وَإِيَّاكَ نَسْتَعِينُ﴾

(And You we ask for help from), because the objective here is the worship, while Allah's help is the tool to implement this objective. Certainly, one first takes care of the most important aspects and then what is less important, and Allah knows best.