The counsel to Ibn Abbas has three connected parts:
1. Duty
احْفَظِ اللَّهَ — observe Allah's commands and limits.
2. Supplication and reliance
فَاسْأَلِ اللَّهَ ... فَاسْتَعِنْ بِاللَّهِ — turn to Allah for help.
3. Trust in decree
لَمْ يَنْفَعُوكَ إِلَّا ... — benefit and harm remain within Allah's power.
Together they teach a balanced practice: do what is right, use lawful means, pray, and trust Allah with the outcome.
For instance, seeking medical advice, taking treatment, asking Allah for recovery and showing patience under uncertainty can all coexist.