1. The meaning of A’oodhu Billahi min al-Shaytan ir-rajeem is turning to Allah for protection from the evil of every evil one. It is said in order to ward off evil from a person. 2. The majority of scholars say that saying “A’oodhu Billah…” is recommended, not obligatory. 3. The words “A’oodhu Billah…” may be said during prayer and at other times. In prayer it is sufficient to recite them once, in the first rak’ah. This does not have to be said in every rak’ah. For more, please see the detailed answer.

Whoever is unable to pronounce al-Fatihah properly because of some defect in his tongue or because he is not an Arabic-speaker must learn to correct his pronunciation as much as he can. If he cannot, then he is relieved of this obligation.