There are all types of attacks that Satan launches on humans to deceive them from the truth. In the Quran, Allah the Almighty spoke of ways Satan pledged to do to cause people harm.  “And I shall approach them in front of them and behind them and to their right and to their left and you shall not find many of them among the grateful.” (Al-A`raf 7:17)

Now the best way to fight against Satan is to follow the path Allah the Almighty and His prophet (peace be upon him) taught us and none of such methods included cursing! As a matter of fact, the prophet (peace be upon him) prohibited us from cursing Satan as a way to attack him or a way to seek defense against him using foul words. In the Hadith, the prophet (peace be upon him) said: “Do not curse at Satan rather seek refuge by Allah.” Now if you are mentioning Satan and said the term (Al-La`n) which also is a form of curse that was set by God on him, it should be fine.

My point, instead of spending time cursing Satan even in the allowed way of saying: (La`anahu Allah), I would advise you to spend time making Zhikr, reading Quran, making Duaa’ and other forms of worship for that is most rewarding and better effective against Satan. Ibn `Abbas said: Satan is closing on the heart of a believer but when he remembers Allah, he retrieves.”