4th Ramadan Dua:

Allahumma inni a`udhu bika min `ilmin la yanfau`, wa min qalbin la yakhsha`u, wa min ainil la tadma`u, wa min da`watin la yustajabu laha`.
O Allah! I seek refuge in You from the knowledge which is not beneficial, and from a heart which does not fear (You), andfrom eyes which do not cry with your fear, and from prayer which is not answered.”