1. The dismissal is apparently made under or 21 rule 2 of cpc.
2. However even if you have filed the restoration petition under or 9 rule 4 cpc which is not applicable here. the technicality can be corrected and the court may treat your application to be filed under 21 rule 106 of cpc.
3. There is no point in challenging his order as the same would be devoid of merit. rather apply the court to treat your present restoration petition as petition under or 21 r 106 of cpc. This is permissible as the nomenclature does not define the petition but the prayer sought for makes it.